10l typo, fix compilation

Originally committed as revision 14401 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.c

@@ -2955,7 +2955,7 @@ static int decode_ref_pic_list_reordering(H264Context *h){
                             assert(!ref->long_ref);
                             if(ref->data[0] != NULL &&
                                    ref->frame_num == frame_num &&
-                                   (ref->reference & pic_structure) &&
+                                   (ref->reference & pic_structure)
                                    ) // ignore non-existing pictures by testing data[0] pointer
                                 break;
                         }