macrofree av_freep()

Originally committed as revision 2839 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -2073,8 +2073,7 @@ void *av_mallocz(unsigned int size);
 void *av_realloc(void *ptr, unsigned int size);
 void av_free(void *ptr);
 char *av_strdup(const char *s);
-void __av_freep(void **ptr);
-#define av_freep(p) __av_freep((void **)(p))
+void av_freep(void *ptr);
 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size);
 /* for static data only */
 /* call av_free_static to release all staticaly allocated tables */

libavcodec/utils.c

@@ -103,9 +103,13 @@ void av_free_static(void)
     last_static = 0;
 }
 
-/* cannot call it directly because of 'void **' casting is not automatic */
-void __av_freep(void **ptr)
+/**
+ * Frees memory and sets the pointer to NULL.
+ * @param arg pointer to the pointer which should be freed
+ */
+void av_freep(void *arg)
 {
+    void **ptr= (void**)arg;
     av_free(*ptr);
     *ptr = NULL;
 }