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-rw-r--r--tools/js-optimizer.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/js-optimizer.js b/tools/js-optimizer.js
index 665ba0db..a4bb896a 100644
--- a/tools/js-optimizer.js
+++ b/tools/js-optimizer.js
@@ -455,7 +455,7 @@ function hoistMultiples(ast) {
} else if (type == 'stat' && node[1][0] == 'block') {
more = true;
return node[1];
- } else if (type == 'block') {
+ } else if (type == 'block' && typeof node[1] == 'object') {
var pre = node[1].length;
node[1] = node[1].filter(function(blockItem) { return !jsonCompare(blockItem, emptyNode()) });
if (node[1].length < pre) {