DD: Mingw 3.4.5 build fix

src/win32/win_main.c

@@ -69,7 +69,7 @@ static HCURSOR windowCursor = NULL; // main window cursor
 
 static LPCSTR wClassName = "SRB2WC";
 
-boolean appActive = false; // app window is active
+INT appActive = false; // app window is active
 
 #ifdef LOGMESSAGES
 FILE *logstream;

src/win32/win_main.h

@@ -23,7 +23,7 @@
 
 extern HWND hWndMain;
 
-extern boolean appActive;
+extern INT appActive;
 
 VOID I_GetSysMouseEvents(INT mouse_state);
 extern UINT MSHWheelMessage;