D-Programming-Language/druntime — pull request #845 by Safety0ff (2014-06-15 23:36:48+00:00)
Title: GC: remove redundant null checks.

The ```____NoSync``` functions are never called with null ```alloc_size``` but still check for null everywhere it is used.

I couldn't replace the pointer parameters with ```ref``` parameters without changing the order of the arguments, which could create confusion.