Bug 1289868: Whitelist outparam in heap write hazard analysis on a CLOSED TREE. r=me

MozReview-Commit-ID: GlVmMxGopBb

js/src/devtools/rootAnalysis/analyzeHeapWrites.js

@@ -209,7 +209,8 @@ function treatAsSafeArgument(entry, varName, csuName)
         ["Gecko_nsFont_InitSystem", "aDest", null],
         ["Gecko_nsStyleFont_FixupNoneGeneric", "aFont", null],
         ["Gecko_StyleTransition_SetUnsupportedProperty", "aTransition", null],
-        ["Gecko_AddPropertyToSet", "aPropertySet", "null"],
+        ["Gecko_AddPropertyToSet", "aPropertySet", null],
+        ["Gecko_CalcStyleDifference", "aAnyStyleChanged", null],
     ];
     for (var [entryMatch, varMatch, csuMatch] of whitelist) {
         assert(entryMatch || varMatch || csuMatch);