user32: Fix EndMenu() to match the PSDK.

dlls/user32/menu.c

@@ -4252,7 +4252,7 @@ END:
  *           EndMenu   (USER.187)
  *           EndMenu   (USER32.@)
  */
-void WINAPI EndMenu(void)
+BOOL WINAPI EndMenu(void)
 {
     /* if we are in the menu code, and it is active */
     if (!fEndMenu && top_popup)
@@ -4266,6 +4266,7 @@ void WINAPI EndMenu(void)
 	/* don't end up with an orphaned menu */
         PostMessageW( top_popup, WM_CANCELMODE, 0, 0);
     }
+    return fEndMenu;
 }
 
 

include/winuser.h

@@ -4482,7 +4482,7 @@ WINUSERAPI BOOL        WINAPI EnableScrollBar(HWND,UINT,UINT);
 WINUSERAPI BOOL        WINAPI EnableWindow(HWND,BOOL);
 WINUSERAPI BOOL        WINAPI EndDeferWindowPos(HDWP);
 WINUSERAPI BOOL        WINAPI EndDialog(HWND,INT_PTR);
-WINUSERAPI VOID        WINAPI EndMenu(void);
+WINUSERAPI BOOL        WINAPI EndMenu(void);
 WINUSERAPI BOOL        WINAPI EndPaint(HWND,const PAINTSTRUCT*);
 WINUSERAPI BOOL        WINAPI EnumChildWindows(HWND,WNDENUMPROC,LPARAM);
 WINUSERAPI UINT        WINAPI EnumClipboardFormats(UINT);