Add existence check for canceler.

8797be9f · stuart nelson · cc64d65c · 8797be9f
Commit 8797be9f authored Jun 09, 2016 by stuart nelson
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public/app/core/services/backend_srv.js
+3 -1

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--- a/public/app/core/services/backend_srv.js
+++ b/public/app/core/services/backend_srv.js
@@ -131,7 +131,9 @@ function (angular, _, coreModule, config) {
        if (requestIsLocal && firstAttempt && err.status === 401) {
          return self.loginPing().then(function() {
            options.retry = 1;
-            canceler.resolve();
+            if (canceler) {
+              canceler.resolve();
+            }
            return self.datasourceRequest(options);
          });
        }