[SFI] Fix initialization of SFI::function_literal_id.

BUG=chromium:965833
TBR=leszeks@chromium.org

Change-Id: I7997841e7af59f7d36854a71cb9f967b91b123d5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1662573Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62321}

src/heap/factory.cc

@@ -3467,6 +3467,7 @@ Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(
           *empty_feedback_metadata(), SKIP_WRITE_BARRIER);
     }
     share->set_script_or_debug_info(*undefined_value(), SKIP_WRITE_BARRIER);
+    share->set_function_literal_id(kFunctionLiteralIdInvalid);
 #if V8_SFI_HAS_UNIQUE_ID
     share->set_unique_id(isolate()->GetNextUniqueSharedFunctionInfoId());
 #endif