mov_chan: Reindent an incorrectly indented line

Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/mov_chan.c

@@ -580,7 +580,7 @@ int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
         }
     }
     if (layout_tag == 0)
-            st->codec->channel_layout = label_mask;
+        st->codec->channel_layout = label_mask;
     else
         st->codec->channel_layout = ff_mov_get_channel_layout(layout_tag, bitmap);