iOS: Fix threading issue with launch-url

ios/ViewController.mm

@@ -197,7 +197,7 @@ extern float g_safeInsetBottom;
 	view.drawableDepthFormat = GLKViewDrawableDepthFormat24;
 	view.drawableStencilFormat = GLKViewDrawableStencilFormat8;
 	[EAGLContext setCurrentContext:self.context];
-	self.preferredFramesPerSecond = 60;
+	self.preferredFramesPerSecond = 60;  // NOTE: We don't yet take advantage of 120hz screens
 
 	[[DisplayManager shared] updateResolution:[UIScreen mainScreen]];
 
@@ -239,7 +239,6 @@ extern float g_safeInsetBottom;
 			NativeFrame(graphicsContext);
 		}
 
-
 		INFO_LOG(SYSTEM, "Emulation thread shutting down\n");
 		NativeShutdownGraphics();
 
@@ -752,7 +751,10 @@ void stopLocation() {
 
 void System_LaunchUrl(LaunchUrlType urlType, char const* url)
 {
-	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithCString:url encoding:NSStringEncodingConversionAllowLossy]]];
+	NSURL *nsUrl = [NSURL URLWithString:[NSString stringWithCString:url encoding:NSStringEncodingConversionAllowLossy]];
+	dispatch_async(dispatch_get_main_queue(), ^{
+		[[UIApplication sharedApplication] openURL:nsUrl] options:@{} completionHandler:nil];
+	});
 }
 
 void bindDefaultFBO()

ios/main.mm

@@ -437,6 +437,16 @@ bool System_MakeRequest(SystemRequestType type, int requestId, const std::string
 		[sharedViewController shareText:text];
 		return true;
 	}
+/*
+	// Not 100% sure the threading is right
+	case SystemRequestType::COPY_TO_CLIPBOARD:
+	{
+		@autoreleasepool {
+			[UIPasteboard generalPasteboard].string = @(param1.c_str());
+			return 0;
+		}
+	}
+*/
 	case SystemRequestType::SET_KEEP_SCREEN_BRIGHT:
         dispatch_async(dispatch_get_main_queue(), ^{
             INFO_LOG(SYSTEM, "SET_KEEP_SCREEN_BRIGHT: %d", (int)param3);