Bug 1337674 followup 3 - Fix assertion check.

MozReview-Commit-ID: EckSAiEeou5

--HG--
extra : source : a5aa66df811c33af2d0996ce213790ff0a5350cf

layout/style/test/stylo-failures.md

@@ -574,14 +574,6 @@ Any line which doesn't follow the format above would be ignored like comment.
 
 ## Assertions
 
-* Table wrapper with borders and paddings bug 1324661
-  * test_animations_async_tests.html asserts [3]
-  * test_animations_effect_timing_enddelay.html asserts [2]
-  * test_animations_event_order.html asserts [1]
-  * test_animations_omta_start.html asserts [1]
-  * test_animations_playbackrate.html asserts [1]
-  * test_at_rule_parse_serialize.html asserts [1]
-  * test_unclosed_parentheses.html asserts [1]
 * Content glue not implemented
   * assertion in frame constructor bug 1324704
     * test_rule_insertion.html asserts [1]

testing/mochitest/tests/SimpleTest/TestRunner.js

@@ -620,7 +620,7 @@ TestRunner.testUnloaded = function() {
             // Accumulate all assertion counts recorded in the failure pattern file.
             let additionalAsserts = TestRunner.expected.reduce((acc, [pat, count]) => {
                 return pat == "ASSERTION" ? acc + count : acc;
-            });
+            }, 0);
             min += additionalAsserts;
             max += additionalAsserts;
         }