Remove unnecessary parentheses from return calls.

Originally committed as revision 13069 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavutil/base64.c

@@ -61,7 +61,7 @@ int av_base64_decode(uint8_t * out, const char *in, int out_length)
         }
     }
 
-    return (dst - out);
+    return dst - out;
 }
 
 /*****************************************************************************