Fix NRE when JIT is enabled for melonDS

CasualPokePlayer · CasualPokePlayer · commit ddba1f21ff83 · 2025-08-11T20:22:53.000-07:00
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NDS/MelonDS.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NDS/MelonDS.cs
@@ -781,7 +781,8 @@ protected override LibWaterboxCore.FrameInfo FrameAdvancePrep(IController contro
 				_openGLProvider.ActivateGLContext(_glContext);
 			}
 
-			_core.SetTraceCallback(Tracer.IsEnabled() ? _traceCallback : null, _settings.GetTraceMask());
+			var isTracing = Tracer?.IsEnabled() ?? false;
+			_core.SetTraceCallback(isTracing ? _traceCallback : null, _settings.GetTraceMask());
 
 			if (controller.IsPressed("Power"))
 			{

Original file line number	Diff line number	Diff line change
`@@ -781,7 +781,8 @@ protected override LibWaterboxCore.FrameInfo FrameAdvancePrep(IController contro`
`781`	`781`	`_openGLProvider.ActivateGLContext(_glContext);`
`782`	`782`	`}`
`783`	`783`
`784`		`- _core.SetTraceCallback(Tracer.IsEnabled() ? _traceCallback : null, _settings.GetTraceMask());`
	`784`	`+ var isTracing = Tracer?.IsEnabled() ?? false;`
	`785`	`+ _core.SetTraceCallback(isTracing ? _traceCallback : null, _settings.GetTraceMask());`
`785`	`786`
`786`	`787`	`if (controller.IsPressed("Power"))`
`787`	`788`	`{`