Fix double-free in GME when using MSX Audio.

Frameworks/GME/gme/Opl_Apu.cpp

@@ -76,7 +76,7 @@ Opl_Apu::~Opl_Apu()
 
 		case type_msxaudio:
 			y8950_shutdown( opl );
-			free( opl_memory );
+			//free( opl_memory ); // y8950_shutdown frees deltat->memory
 			//fclose( logfile );
 			break;
 
@@ -281,4 +281,4 @@ void Opl_Apu::run_until( blip_time_t end_time )
 		}
 		next_time = time;
 	}
-}
+}