compiling under qnx, hope it works on all qnx release :)

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3088 b3059339-0415-0410-9bf9-f77b7e298cf2

libao2/ao_alsa5.c

@@ -189,8 +189,10 @@ static int init(int rate_hz, int channels, int format, int flags)
 	    printf("alsa-init: pcm channel info error: %s\n", snd_strerror(err));
 	    return(0);
 	}
+#ifndef __QNX__
 	if (chninfo.buffer_size)
 	    ao_buffersize = chninfo.buffer_size;
+#endif
 	if (verbose)
 	    printf("alsa-init: setting preferred buffer size from driver: %d bytes\n",
 		ao_buffersize);