Fixed shadowed variable declaration

server/handlers.go

@@ -600,7 +600,7 @@ func (s *Server) sendCodeResponse(w http.ResponseWriter, r *http.Request, authRe
 			implicitOrHybrid = true
 			var err error
 
-			accessToken, err := s.newAccessToken(authReq.ClientID, authReq.Claims, authReq.Scopes, authReq.Nonce, authReq.ConnectorID)
+			accessToken, err = s.newAccessToken(authReq.ClientID, authReq.Claims, authReq.Scopes, authReq.Nonce, authReq.ConnectorID)
 			if err != nil {
 				s.logger.Errorf("failed to create new access token: %v", err)
 				s.tokenErrHelper(w, errServerError, "", http.StatusInternalServerError)