context.SaveUploadedFile: Only run Chmod if mode needs change

Author: krombel

context.go

@@ -720,7 +720,14 @@ func (c *Context) SaveUploadedFile(file *multipart.FileHeader, dst string, perm
 	if err = os.MkdirAll(dir, mode); err != nil {
 		return err
 	}
-	if err = os.Chmod(dir, mode); err != nil {
+	// Only run Chmod if mode is not as configured
+	if info, err := os.Stat(dir); err == nil {
+		if info.Mode().Perm() != mode {
+			if err = os.Chmod(dir, mode); err != nil {
+				return err
+			}
+		}
+	} else {
 		return err
 	}