video upload: fix variable scope issue

opencv-yolo/web/web.py

@@ -188,10 +188,10 @@ worker.conf.update(
 
 def getRegionConfig(ipcSN):
     region = None
+    reqUrl = API_HOST + API_CAMERA_CFG_URI.format(ipcSN)
     if ipcSN in CAMERA_CONFIG_MAP and type(CAMERA_CONFIG_MAP[ipcSN]) is dict:
         region = CAMERA_CONFIG_MAP[ipcSN]['region']
     elif CAMERA_CONFIG_MAP.get(ipcSN) is None and API_HOST:
-        reqUrl = API_HOST + API_CAMERA_CFG_URI.format(ipcSN)
         res = requests.get(reqUrl)
         try:
             if res.status_code == 200: