Fix --track_gc_object_stats option.

src/v8-counters.cc

Index: src/v8-counters.cc
diff --git a/src/v8-counters.cc b/src/v8-counters.cc
index ca83e38f86794f734905375743e4a8608c207068..3ca8445d6c3cb6610166881eb786073ed97976da 100644
--- a/src/v8-counters.cc
+++ b/src/v8-counters.cc
@@ -73,7 +73,7 @@ Counters::Counters(Isolate* isolate) {
     count_of_FIXED_ARRAY_##name##_ = \
         StatsCounter("c:" "V8.CountOf_FIXED_ARRAY-" #name); \
     size_of_FIXED_ARRAY_##name##_ = \
-        StatsCounter("c:" "V8.SizeOf_FIXED_ARRAY-" #name); \
+        StatsCounter("c:" "V8.SizeOf_FIXED_ARRAY-" #name);
     FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
 #undef SC
 }