Correctly report callstack when current function is FunctionCall builtin

src/profile-generator-inl.h

Index: src/profile-generator-inl.h
diff --git a/src/profile-generator-inl.h b/src/profile-generator-inl.h
index f2e6ec66501b5f69cfdeb9fbb6aa225afdcd7ebe..115e8139d8d05ca5bb62b87738269a142b290f21 100644
--- a/src/profile-generator-inl.h
+++ b/src/profile-generator-inl.h
@@ -50,6 +50,7 @@ CodeEntry::CodeEntry(Logger::LogEventsAndTags tag,
                      const char* resource_name,
                      int line_number)
     : tag_(tag),
+      builtin_id_(Builtins::builtin_count),
       name_prefix_(name_prefix),
       name_(name),
       resource_name_(resource_name),