[boost] [format] old-style cast warning

Subject: [boost] [format] old-style cast warning
From: Jürgen Hunold (juergen.hunold_at_[hidden])
Date: 2010-08-25 15:01:10

Hi,

I'm using Boost.Format with gcc "-Wold-style-cast" enabled. This issued a 
warning in format/feed_args.hpp.

Okay to commit the attached patch ?

Yours,

Jürgen
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