1 files changed, 1 insertions, 0 deletions
diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js
index 221b555f..b778ca82 100644
--- a/tools/js-optimizer.js
+++ b/tools/js-optimizer.js
@@ -1303,6 +1303,7 @@ function vacuum(ast) {
   traverseGeneratedFunctions(ast, function(node) {
     vacuumInternal(node);
     simplifyNotComps(node);
+    removeEmptySubNodes(node);
   });
 }