Fix lo_space initialization for external snapshot

R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/684263002

Patch from André Baixo <baixo@google.com>.

Cr-Commit-Position: refs/heads/master@{#24998}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24998 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/snapshot-external.cc

@@ -136,6 +136,7 @@ void SetSnapshotFromFile(StartupData* snapshot_blob) {
   snapshot_impl_->context_map_space_used = source.GetInt();
   snapshot_impl_->context_cell_space_used = source.GetInt();
   snapshot_impl_->context_property_cell_space_used = source.GetInt();
+  snapshot_impl_->context_lo_space_used = source.GetInt();
 
   DCHECK(success);
 }