[heap] GCTracer: Fix UB when iterating incremental scopes

src/heap/gc-tracer.cc

Index: src/heap/gc-tracer.cc
diff --git a/src/heap/gc-tracer.cc b/src/heap/gc-tracer.cc
index d8d582cb0713a906dc568e6d6e5ccb4a036c2c09..695a259884804b2bcea347e164b43ec1f3517a48 100644
--- a/src/heap/gc-tracer.cc
+++ b/src/heap/gc-tracer.cc
@@ -276,7 +276,7 @@ void GCTracer::Stop(GarbageCollector collector) {
     recorded_incremental_mark_compacts_.Push(
         MakeBytesAndDuration(current_.start_object_size, duration));
     combined_mark_compact_speed_cache_ = 0.0;
-    for (int i = 0; i <= Scope::NUMBER_OF_INCREMENTAL_SCOPES; i++) {
+    for (int i = 0; i < Scope::NUMBER_OF_INCREMENTAL_SCOPES; i++) {
       incremental_marking_scopes_[i].ResetCurrentCycle();
     }
   } else {
@@ -285,7 +285,7 @@ void GCTracer::Stop(GarbageCollector collector) {
     recorded_mark_compacts_.Push(
         MakeBytesAndDuration(current_.start_object_size, duration));
     combined_mark_compact_speed_cache_ = 0.0;
-    for (int i = 0; i <= Scope::NUMBER_OF_INCREMENTAL_SCOPES; i++) {
+    for (int i = 0; i < Scope::NUMBER_OF_INCREMENTAL_SCOPES; i++) {
       incremental_marking_scopes_[i].ResetCurrentCycle();
     }
   }