msi: Only wait for custom actions that don't have msidbCustomActionTypeContinue specified.

dlls/msi/custom.c

@@ -398,7 +398,7 @@ static UINT process_handle(MSIPACKAGE* package, UINT type,
     {
         TRACE("Asynchronous Execution of action %s\n",debugstr_w(Name));
         /* asynchronous */
-        if (type & msidbCustomActionTypeContinue)
+        if (!(type & msidbCustomActionTypeContinue))
         {
             if (ProcessHandle)
             {