mp3: make flake8 rules happy 2

Author: CatKasha

filetype/types/audio.py

@@ -44,16 +44,16 @@ def match(self, buf):
             if (buf[0] == 0x49 and
                 buf[1] == 0x44 and
                 buf[2] == 0x33):
-                return True
+                    return True
 
             if (buf[0] == 0xFF):
-                if (buf[1] == 0xE2 or  #MPEG 2.5 with error protection
-                    buf[1] == 0xE3 or  #MPEG 2.5 w/o error protection
-                    buf[1] == 0xF2 or  #MPEG 2 with error protection
-                    buf[1] == 0xF3 or  #MPEG 2 w/o error protection
-                    buf[1] == 0xFA or  #MPEG 1 with error protection
-                    buf[1] == 0xFB):   #MPEG 1 w/o error protection
-                    return True
+                if (buf[1] == 0xE2 or  # MPEG 2.5 with error protection
+                    buf[1] == 0xE3 or  # MPEG 2.5 w/o error protection
+                    buf[1] == 0xF2 or  # MPEG 2 with error protection
+                    buf[1] == 0xF3 or  # MPEG 2 w/o error protection
+                    buf[1] == 0xFA or  # MPEG 1 with error protection
+                    buf[1] == 0xFB):   # MPEG 1 w/o error protection
+                        return True
         return False