tyls: Make sure we never divide by zero

Avoid the case where cols is 0 and we divide through it.

CID 1100655

src/bin/main.c

@@ -3059,6 +3059,7 @@ remote:
 
    config_del(main_config);
    config_shutdown();
+   config_del(config);
    eina_log_domain_unregister(_log_domain);
    _log_domain = -1;
 

src/bin/options_wallpaper.c

@@ -132,7 +132,7 @@ _grid_content_get(void *data, Evas_Object *obj, const char *part)
                                                       config->theme);
              o = elm_layout_add(obj);
              oe = elm_layout_edje_get(o);
-             edje_object_file_set(oe, path, "terminology/background");
+             if (!edje_object_file_set(oe, path, "terminology/background")) return NULL;
              evas_object_show(o);
              return o;
          }

src/bin/tyls.c

@@ -640,6 +640,7 @@ list_dir(const char *dir, int mode)
              stuff--;
           }
         if (cols > num) cols = num;
+        if (cols == 0) cols = 1;
         rows = ((num + (cols - 1)) / cols);
         for (i = 0; i < rows; i++)
           {

src/bin/utils.c

@@ -37,7 +37,7 @@ theme_reload(Evas_Object *edje)
 
    edje_object_file_get(edje, &file, &group);
    INF("file=%s, group=%s", file, group);
-   edje_object_file_set(edje, file, group);
+   if (!edje_object_file_set(edje, file, group)) return;
 }
 
 static void