golangci-lint: fix issues found by gosimple

Everything except the

	if err2.Err == syscall.EOPNOTSUPP

case. Gets too confusing when collapsed into a single line.

Issues were:

$ golangci-lint run --disable-all --enable gosimple
mount.go:473:2: S1008: should use 'return strings.HasPrefix(v, "fusermount version")' instead of 'if strings.HasPrefix(v, "fusermount version") { return true }; return false' (gosimple)
	if strings.HasPrefix(v, "fusermount version") {
	^
cli_args.go:258:5: S1002: should omit comparison to bool constant, can be simplified to `args.forcedecode` (gosimple)
	if args.forcedecode == true {
	   ^
cli_args.go:263:6: S1002: should omit comparison to bool constant, can be simplified to `args.aessiv` (gosimple)
		if args.aessiv == true {
		   ^
cli_args.go:267:6: S1002: should omit comparison to bool constant, can be simplified to `args.reverse` (gosimple)
		if args.reverse == true {
		   ^
internal/stupidgcm/stupidgcm.go:227:6: S1002: should omit comparison to bool constant, can be simplified to `g.forceDecode` (gosimple)
		if g.forceDecode == true {
		   ^
gocryptfs-xray/xray_tests/xray_test.go:23:5: S1004: should use !bytes.Equal(out, expected) instead (gosimple)
	if bytes.Compare(out, expected) != 0 {
	   ^
gocryptfs-xray/xray_tests/xray_test.go:40:5: S1004: should use !bytes.Equal(out, expected) instead (gosimple)
	if bytes.Compare(out, expected) != 0 {
	   ^
gocryptfs-xray/paths_ctlsock.go:34:20: S1002: should omit comparison to bool constant, can be simplified to `!eof` (gosimple)
	for eof := false; eof == false; line++ {
	                  ^
tests/reverse/xattr_test.go:19:2: S1008: should use 'return err2.Err != syscall.EOPNOTSUPP' instead of 'if err2.Err == syscall.EOPNOTSUPP { return false }; return true' (gosimple)
	if err2.Err == syscall.EOPNOTSUPP {
	^
internal/fusefrontend/node.go:459:45: S1002: should omit comparison to bool constant, can be simplified to `!nameFileAlreadyThere` (gosimple)
		if nametransform.IsLongContent(cName2) && nameFileAlreadyThere == false {
		                                          ^
tests/xattr/xattr_integration_test.go:221:2: S1008: should use 'return err2.Err != syscall.EOPNOTSUPP' instead of 'if err2.Err == syscall.EOPNOTSUPP { return false }; return true' (gosimple)
	if err2.Err == syscall.EOPNOTSUPP {
	^
tests/test_helpers/helpers.go:338:19: S1002: should omit comparison to bool constant, can be simplified to `open` (gosimple)
	if err != nil && open == true {
	                 ^
tests/matrix/concurrency_test.go:121:7: S1004: should use !bytes.Equal(buf, content) instead (gosimple)
			if bytes.Compare(buf, content) != 0 {
			   ^

2 files changed, 3 insertions, 3 deletions

diff --git a/gocryptfs-xray/paths_ctlsock.go b/gocryptfs-xray/paths_ctlsock.go
index c489f0e..278916f 100644
--- a/gocryptfs-xray/paths_ctlsock.go
+++ b/gocryptfs-xray/paths_ctlsock.go
@@ -31,7 +31,7 @@ func transformPaths(socketPath string, req *ctlsock.RequestStruct, in *string, s
 		separator = '\000'
 	}
 	r := bufio.NewReader(os.Stdin)
-	for eof := false; eof == false; line++ {
+	for eof := false; !eof; line++ {
 		val, err := r.ReadBytes(separator)
 		if len(val) == 0 {
 			break
diff --git a/gocryptfs-xray/xray_tests/xray_test.go b/gocryptfs-xray/xray_tests/xray_test.go
index 790d2db..2df83f2 100644
--- a/gocryptfs-xray/xray_tests/xray_test.go
+++ b/gocryptfs-xray/xray_tests/xray_test.go
@@ -20,7 +20,7 @@ func TestAesgcmXray(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if bytes.Compare(out, expected) != 0 {
+	if !bytes.Equal(out, expected) {
 		t.Errorf("Unexpected output")
 		fmt.Printf("expected:\n%s", string(expected))
 		fmt.Printf("have:\n%s", string(out))
@@ -37,7 +37,7 @@ func TestAessivXray(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if bytes.Compare(out, expected) != 0 {
+	if !bytes.Equal(out, expected) {
 		t.Errorf("Unexpected output")
 		fmt.Printf("expected:\n%s", string(expected))
 		fmt.Printf("have:\n%s", string(out))