createTaskWithTimeout: Don't log expiration if task threw (#1412)

FREEBIE

libtextsecure/task_with_timeout.js

@@ -51,7 +51,13 @@
                     return reject(error);
                 };
 
-                var promise = task();
+                var promise;
+                try {
+                    promise = task();
+                } catch(error) {
+                    clearTimer();
+                    throw error;
+                }
                 if (!promise || !promise.then) {
                     clearTimer();
                     complete = true;