Use application-x-executable for unparseable desktop entries (issue #570)

src/launcher/icon-theme-common.c

@@ -711,6 +711,9 @@ char *get_icon_path_from_cache(IconThemeWrapper *wrapper, const char *icon_name,
 		return NULL;
 	}
 
+	if (!g_file_test(value, G_FILE_TEST_EXISTS))
+		return NULL;
+
 	// fprintf(stderr, "Icon path found in cache: theme = %s, icon = %s, size = %d, path = %s\n", wrapper->icon_theme_name, icon_name, size, value);
 
 	return strdup(value);

src/tint2conf/properties.c

@@ -2332,14 +2332,17 @@ void load_desktop_file(const char *file, gboolean selected)
 				g_object_unref(pixbuf);
 		} else {
 			printf("Could not load %s\n", file);
+			GdkPixbuf *pixbuf = load_icon(DEFAULT_ICON);
 			GtkTreeIter iter;
 			gtk_list_store_append(store, &iter);
 			gtk_list_store_set(store, &iter,
-							   appsColIcon, NULL,
+							   appsColIcon, pixbuf,
 							   appsColText, g_strdup(file),
 							   appsColPath, g_strdup(file),
 							   appsColIconName, g_strdup(""),
 							   -1);
+			if (pixbuf)
+				g_object_unref(pixbuf);
 		}
 		free_desktop_entry(&entry);
 	}