Fix some go_vet issues

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pkg/mount/mounter_linux.go

@@ -53,7 +53,6 @@ func mount(device, target, mType string, flags uintptr, data string) error {
 				flags:  flags & pflags,
 				err:    err,
 			}
-			return err
 		}
 	}
 

pkg/system/lstat_unix.go

@@ -14,7 +14,7 @@ import (
 func Lstat(path string) (*StatT, error) {
 	s := &syscall.Stat_t{}
 	if err := syscall.Lstat(path, s); err != nil {
-		return nil, &os.PathError{"Lstat", path, err}
+		return nil, &os.PathError{Op: "Lstat", Path: path, Err: err}
 	}
 	return fromStatT(s)
 }

pkg/system/stat_unix.go

@@ -60,7 +60,7 @@ func (s StatT) IsDir() bool {
 func Stat(path string) (*StatT, error) {
 	s := &syscall.Stat_t{}
 	if err := syscall.Stat(path, s); err != nil {
-		return nil, &os.PathError{"Stat", path, err}
+		return nil, &os.PathError{Op: "Stat", Path: path, Err: err}
 	}
 	return fromStatT(s)
 }