exec the job; it's a simple operation (remove a file) and this works when the application is about to quit. i wonder if there's a way to manually flush kio jobs on app exit? i don't really want this to be exec'd, i just want to be sure that the job is started!

svn path=/trunk/KDE/kdelibs/; revision=953292

wallpaper.cpp

@@ -392,7 +392,8 @@ void Wallpaper::insertIntoCache(const QString& key, const QImage &image)
     //TODO: cache limits?
     if (d->cacheRendering) {
         if (image.isNull()) {
-            KIO::file_delete(d->cachePath(key));
+            KIO::SimpleJob *job = KIO::file_delete(d->cachePath(key));
+            job->exec();
         } else {
             image.save(d->cachePath(key));
         }