Removes 4 unneeded values in the GL plugin, Makes less buffer underruns in ALSA in DSP_NULL, and case sensitivity so Wii games get just a 'wii' bit farther

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@216 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_DSP_NULL/Src/PCHW/AOSoundStream.cpp

@@ -54,7 +54,8 @@ namespace AOSound
 		}
 
 		return(false);*/
-		ao_play(device, soundData, dwSoundBytes);
+		if(soundData[0] != 0)
+			ao_play(device, soundData, dwSoundBytes);
 		return true;
 		
 	}