- use std::runtime_error instead as the constructor on std::exception is a MSVC extension

src/doomerrors.h

@@ -38,6 +38,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <exception>
+#include <stdexcept>
 
 #define MAX_ERRORTEXT	1024
 
@@ -80,10 +81,10 @@ protected:
 	char m_Message[MAX_ERRORTEXT];
 };
 
-class CNoRunExit : public std::exception
+class CNoRunExit : public std::runtime_error
 {
 public:
-	CNoRunExit() : std::exception("NoRunExit")
+	CNoRunExit() : std::runtime_error("NoRunExit")
 	{
 	}
 };