Bug 891436 - Skip heap walk for profilingScripts during minor GC; r=billm

--HG--
extra : rebase_source : acc76b0b299412c420c7fcc4cc3dc269b82cbeb8

js/src/gc/RootMarking.cpp

@@ -713,7 +713,7 @@ js::gc::MarkRuntime(JSTracer *trc, bool useSavedRoots)
         }
 
         /* Do not discard scripts with counts while profiling. */
-        if (rt->profilingScripts) {
+        if (rt->profilingScripts && !rt->isHeapMinorCollecting()) {
             for (CellIterUnderGC i(zone, FINALIZE_SCRIPT); !i.done(); i.next()) {
                 JSScript *script = i.get<JSScript>();
                 if (script->hasScriptCounts) {