Fix unsafe "instanceof" negations

https://github.com/MoonchildProductions/Pale-Moon/pull/1173

1 files changed, 2 insertions, 2 deletions

diff --git a/services/fxaccounts/FxAccountsProfileClient.jsm b/services/fxaccounts/FxAccountsProfileClient.jsm
index 37115a3fab..1e5edc634c 100644
--- a/services/fxaccounts/FxAccountsProfileClient.jsm
+++ b/services/fxaccounts/FxAccountsProfileClient.jsm
@@ -89,7 +89,7 @@ this.FxAccountsProfileClient.prototype = {
     try {
       return (yield this._rawRequest(path, method, token));
     } catch (ex) {
-      if (!ex instanceof FxAccountsProfileClientError || ex.code != 401) {
+      if (!(ex instanceof FxAccountsProfileClientError) || ex.code != 401) {
         throw ex;
       }
       // If this object was instantiated with a token then we don't refresh it.
@@ -105,7 +105,7 @@ this.FxAccountsProfileClient.prototype = {
       try {
         return (yield this._rawRequest(path, method, token));
       } catch (ex) {
-        if (!ex instanceof FxAccountsProfileClientError || ex.code != 401) {
+        if (!(ex instanceof FxAccountsProfileClientError) || ex.code != 401) {
           throw ex;
         }
         log.info("Retry fetching the profile still returned a 401 - revoking our token and failing");