$OpenBSD: patch-sound_snd_system_cpp,v 1.1.1.1 2019/09/02 18:04:40 thfr Exp $

fix type for ALUint NULL -> 0

Index: sound/snd_system.cpp
--- sound/snd_system.cpp.orig
+++ sound/snd_system.cpp
@@ -1143,7 +1143,7 @@ ALuint idSoundSystemLocal::AllocOpenALSource( idSoundC
 
 		return openalSources[index].handle;
 	} else {
-		return NULL;
+		return 0;
 	}
 }
 
@@ -1157,7 +1157,7 @@ void idSoundSystemLocal::FreeOpenALSource( ALuint hand
 	for ( i = 0; i < openalSourceCount; i++ ) {
 		if ( openalSources[i].handle == handle ) {
 			if ( openalSources[i].chan ) {
-				openalSources[i].chan->openalSource = NULL;
+				openalSources[i].chan->openalSource = 0;
 			}
 
 			// Initialize structure
