[nostalgia/core] Cleanup

src/nostalgia/core/gba/core.arm.cpp

@@ -6,6 +6,7 @@
 #include <nostalgia/core/core.hpp>
 
 #include "addresses.hpp"
+#include "context.hpp"
 #include "bios.hpp"
 #include "irq.hpp"
 #include "core.hpp"
@@ -18,7 +19,8 @@ UpdateHandler g_updateHandler = nullptr;
 
 ox::Error run(Context *ctx) noexcept {
 	g_wakeupTime = 0;
-	while (ctx->running) {
+	const auto gbaCtx = static_cast<gba::Context*>(ctx);
+	while (gbaCtx->running) {
 		if (g_wakeupTime <= g_timerMs && g_updateHandler) {
 			auto sleepTime = g_updateHandler(ctx);
 			if (sleepTime >= 0) {