jspahrsummers/libextobjc — pull request #29 by nverinaud (2013-04-26 14:56:59+00:00)
Title: Fix memory issue with weakify & block.

The use of unsafeify does not prevent a block from retaining a surrounding object.
So I added a blockify macro which uses (__block) and redefine weakify if ARC is disabled.