Levente Uzonyi uploaded a new version of Compiler to project The Trunk:
http://source.squeak.org/trunk/Compiler-ul.116.mcz

==================== Summary ====================

Name: Compiler-ul.116
Author: ul
Time: 25 January 2010, 10:40:59.752 pm
UUID: 29cfe126-9fa7-0149-9c25-e068d536b0b9
Ancestors: Compiler-ar.115

- don't create a block in Dictionary >> #bindingOf:

=============== Diff against Compiler-ar.115 ===============

Item was changed:
  ----- Method: Dictionary>>bindingOf: (in category '*Compiler') -----
  bindingOf: varName
+ 
+ 	^self associationAt: varName ifAbsent: nil!
- 	^self associationAt: varName ifAbsent:[nil]!