Change av_free to av_freep

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19360 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/indeo3.c

@@ -143,9 +143,9 @@ static av_cold int iv_alloc_frames(Indeo3DecodeContext *s)
 
 static av_cold void iv_free_func(Indeo3DecodeContext *s)
 {
-    av_free(s->buf);
-    av_free(s->ModPred);
-    av_free(s->corrector_type);
+    av_freep(&s->buf);
+    av_freep(&s->ModPred);
+    av_freep(&s->corrector_type);
 }
 
 struct ustr {