!1246 优化代码，防止路径末尾为'/'时多调用一次Restorecon()

Merge pull request !1246 from felix.dp/dev

ueventd/ueventd_device_handler.c

@@ -113,7 +113,7 @@ static void SetDeviceLable(const char *path)
             continue;
         }
         if (gap < 0) { // end with '/'
-            break;
+            return;
         }
 
         if (memcpy_s(buffer, PATH_MAX, path, p - path - 1) != EOK) {