user32: Add a stub for DisableProcessWindowsGhosting.

dlls/user32/misc.c

@@ -706,3 +706,14 @@ LRESULT WINAPI SendIMEMessageExW(HWND p1, LPARAM p2)
   SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
   return 0;
 }
+
+/**********************************************************************
+ * DisableProcessWindowsGhosting [USER32.@]
+ *
+ */
+VOID WINAPI DisableProcessWindowsGhosting(VOID)
+{
+  FIXME(": stub\n");
+  SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+  return;
+}

dlls/user32/user32.spec

@@ -163,7 +163,7 @@
 @ stdcall DialogBoxIndirectParamW(long ptr long ptr long)
 @ stdcall DialogBoxParamA(long str long ptr long)
 @ stdcall DialogBoxParamW(long wstr long ptr long)
-# @ stub DisableProcessWindowsGhosting
+@ stdcall DisableProcessWindowsGhosting()
 @ stdcall DispatchMessageA(ptr)
 @ stdcall DispatchMessageW(ptr)
 # @ stub DisplayExitWindowsWarnings