Merge commit '6a928293'

* commit '6a928293':
  examples: filter_audio: Add missing mem.h header for av_freep()
Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/examples/filter_audio.c

@@ -45,6 +45,7 @@
 
 #include "libavutil/channel_layout.h"
 #include "libavutil/md5.h"
+#include "libavutil/mem.h"
 #include "libavutil/opt.h"
 #include "libavutil/samplefmt.h"