Removed some shadowed values (thanks gopls)

file.go

@@ -146,8 +146,8 @@ func (f *File) GetChildrenRecursively() (children []*File, err error) {
 	errChan := make(chan error)
 	for _, folds := range childFolders {
 		go func(fil *File) {
-			childs, err := fil.GetChildrenRecursively()
+			childs, childsErr := fil.GetChildrenRecursively()
-			errChan <- err
+			errChan <- childsErr
 			foldChil <- childs
 		}(folds)
 	}
@@ -320,7 +320,8 @@ func (f *File) ExtractWithOptions(path string, dereferenceSymlink, unbreakSymlin
 				errs = append(errs, err)
 				return
 			}
-			fil, err := os.Open(path + "/" + f.name)
+			var fil *os.File
+			fil, err = os.Open(path + "/" + f.name)
 			if err != nil {
 				if verbose {
 					fmt.Println("Error while opening:", path+"/"+f.name)
@@ -347,7 +348,8 @@ func (f *File) ExtractWithOptions(path string, dereferenceSymlink, unbreakSymlin
 				errs = append(errs, err)
 			}
 		}
-		children, err := f.GetChildren()
+		var children []*File
+		children, err = f.GetChildren()
 		if err != nil {
 			if verbose {
 				fmt.Println("Error getting children for:", f.Path())
@@ -371,7 +373,8 @@ func (f *File) ExtractWithOptions(path string, dereferenceSymlink, unbreakSymlin
 		}
 		return
 	case f.IsFile():
-		fil, err := os.Create(path + "/" + f.name)
+		var fil *os.File
+		fil, err = os.Create(path + "/" + f.name)
 		if os.IsExist(err) {
 			err = os.Remove(path + "/" + f.name)
 			if err != nil {

go.mod

@@ -3,7 +3,7 @@ module github.com/CalebQ42/squashfs
 go 1.15
 
 require (
-	github.com/CalebQ42/GoAppImage v0.4.0
+	github.com/CalebQ42/GoAppImage v0.5.0
 	github.com/adrg/xdg v0.2.3 // indirect
 	github.com/google/go-cmp v0.5.4 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20200217142428-fce0ec30dd00 // indirect
@@ -11,6 +11,7 @@ require (
 	github.com/kr/text v0.2.0 // indirect
 	github.com/pierrec/lz4/v4 v4.1.3
 	github.com/smartystreets/assertions v1.2.0 // indirect
+	github.com/stretchr/testify v1.7.0 // indirect
 	github.com/ulikunitz/xz v0.5.9
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect

go.sum

@@ -1,5 +1,5 @@
-github.com/CalebQ42/GoAppImage v0.4.0 h1:aF+Y/vyo/RGhoyZEW1CMY6WyRWrZZO4ydsRFAtIGnaY=
+github.com/CalebQ42/GoAppImage v0.5.0 h1:znoKNXtliH754tS9sYwyOIg/0wFDjFN5Twc7PAh1rSM=
-github.com/CalebQ42/GoAppImage v0.4.0/go.mod h1:qHudJKAn/dlkNWNnH4h1YKXp29EZ7Bppsn7sNP2HuvU=
+github.com/CalebQ42/GoAppImage v0.5.0/go.mod h1:qHudJKAn/dlkNWNnH4h1YKXp29EZ7Bppsn7sNP2HuvU=
 github.com/adrg/xdg v0.2.2 h1:A7ZHKRz5KGOLJX/bg7IPzStryhvCzAE1wX+KWawPiAo=
 github.com/adrg/xdg v0.2.2/go.mod h1:7I2hH/IT30IsupOpKZ5ue7/qNi3CoKzD6tL3HwpaRMQ=
 github.com/adrg/xdg v0.2.3 h1:GxXngdYxNDkoUvZXjNJGwqZxWXi43MKbOOlA/00qZi4=
@@ -39,9 +39,12 @@ github.com/smartystreets/assertions v1.2.0 h1:42S6lae5dvLc7BrLu/0ugRtcFVjoJNMC/N
 github.com/smartystreets/assertions v1.2.0/go.mod h1:tcbTF8ujkAEcZ8TElKY+i30BzYlVhC/LOxJk7iOWnoo=
 github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
+github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
 github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/ulikunitz/xz v0.5.9 h1:RsKRIA2MO8x56wkkcd3LbtcE/uMszhb6DpRf+3uwa3I=
 github.com/ulikunitz/xz v0.5.9/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 go.lsp.dev/uri v0.3.0 h1:KcZJmh6nFIBeJzTugn5JTU6OOyG0lDOo3R9KwTxTYbo=

reader.go

@@ -56,7 +56,8 @@ func NewSquashfsReader(r io.ReaderAt) (*Reader, error) {
 	if rdr.flags.CompressorOptions {
 		switch rdr.super.CompressionType {
 		case GzipCompression:
-			gzip, err := compression.NewGzipCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
+			var gzip *compression.Gzip
+			gzip, err = compression.NewGzipCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
 			if err != nil {
 				return nil, err
 			}
@@ -65,7 +66,8 @@ func NewSquashfsReader(r io.ReaderAt) (*Reader, error) {
 			}
 			rdr.decompressor = gzip
 		case XzCompression:
-			xz, err := compression.NewXzCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
+			var xz *compression.Xz
+			xz, err = compression.NewXzCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
 			if err != nil {
 				return nil, err
 			}
@@ -74,13 +76,15 @@ func NewSquashfsReader(r io.ReaderAt) (*Reader, error) {
 			}
 			rdr.decompressor = xz
 		case Lz4Compression:
-			lz4, err := compression.NewLz4CompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
+			var lz4 *compression.Lz4
+			lz4, err = compression.NewLz4CompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 8))
 			if err != nil {
 				return nil, err
 			}
 			rdr.decompressor = lz4
 		case ZstdCompression:
-			zstd, err := compression.NewZstdCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 4))
+			var zstd *compression.Zstd
+			zstd, err = compression.NewZstdCompressorWithOptions(io.NewSectionReader(rdr.r, int64(binary.Size(rdr.super)), 4))
 			if err != nil {
 				return nil, err
 			}