update doc

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@12960 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/mov.c

@@ -153,7 +153,6 @@ typedef struct MOVContext {
 
 /* those functions parse an atom */
 /* return code:
-  1: found what I wanted, exit
   0: continue to parse next atom
  <0: error occurred, exit
 */