menu_cbs_deferred_push.c - Fix 'array compared against 0'

input/drivers_hid/libusb_hid.c

@@ -596,7 +596,8 @@ static void *libusb_hid_init(void)
    return hid;
 
 error:
-   libusb_hid_free(hid);
+   if (hid)
+      libusb_hid_free(hid);
    return NULL;
 }
 

menu/cbs/menu_cbs_deferred_push.c

@@ -411,7 +411,7 @@ static int general_push(menu_displaylist_info_t *info,
          }
          else
          {
-            if (system->valid_extensions)
+            if (!string_is_empty(system->valid_extensions))
                strlcpy(info->exts, system->valid_extensions, sizeof(info->exts));
          }
          break;