Codechange: [Win32] Disable assert message box when no GUI (#12291)

src/video/dedicated_v.cpp

@@ -126,6 +126,8 @@ const char *VideoDriver_Dedicated::Start(const StringList &)
 #ifdef _MSC_VER
 	/* Disable the MSVC assertion message box. */
 	_set_error_mode(_OUT_TO_STDERR);
+	_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
+	_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
 #endif
 
 	Debug(driver, 1, "Loading dedicated server");

src/video/null_v.cpp

@@ -24,6 +24,8 @@ const char *VideoDriver_Null::Start(const StringList &parm)
 #ifdef _MSC_VER
 	/* Disable the MSVC assertion message box. */
 	_set_error_mode(_OUT_TO_STDERR);
+	_CrtSetReportMode(_CRT_ASSERT, _CRTDBG_MODE_FILE);
+	_CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);
 #endif
 
 	this->UpdateAutoResolution();