--- source/unix/main.cpp.orig	2017-09-03 13:49:19.000000000 -0400
+++ source/unix/main.cpp	2018-04-24 09:23:21.292702653 -0400
@@ -1083,7 +1083,7 @@
 	if (custompalette) { free(custompalette); }
 	
 	// Deinitialize audio
-	audio_deinit();
+	if (audio_deinit != NULL) { audio_deinit(); }
 	
 	// Deinitialize joysticks
 	input_joysticks_close();

.