diff -r 04ce04a54936 -r 7c5be05296e3 src/compiler/NameBinding.cpp
--- a/src/compiler/NameBinding.cpp	Sat Nov 17 20:23:36 2012 -0800
+++ b/src/compiler/NameBinding.cpp	Sat Nov 17 22:02:08 2012 -0800
@@ -582,7 +582,8 @@
     void visitIfStatement(IfStatement *node) {
         node->condition()->accept(this);
         node->ifTrue()->accept(this);
-        node->ifFalse()->accept(this);
+        if (node->ifFalse())
+            node->ifFalse()->accept(this);
     }
     void visitIndexExpression(IndexExpression *node) {
         node->left()->accept(this);