--- a/hedgewars/avwrapper/avwrapper.c	Wed Nov 11 18:40:52 2015 +0100
+++ b/hedgewars/avwrapper/avwrapper.c	Tue Nov 10 13:53:10 2015 +0100
@@ -192,6 +192,8 @@
 
     AVPacket Packet;
     av_init_packet(&Packet);
+    Packet.data = NULL;
+    Packet.size = 0;
 
     int NumSamples = fread(g_pSamples, 2*g_Channels, g_NumSamples, g_pSoundFile);