Small fix for Preprocessor::LookAhead

[akyrtzi]

Hi,

The attached patch, sets the correct size to an array allocation.

lexer-fix.patch (475 Bytes)

[Chris_Lattner]

Thanks, applied!
http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20080324/004816.html

-Chris