Lost fix for overflow in alloc_flex_gd()

  Hello,

  I've noticed that fix https://lkml.org/lkml/2012/2/20/422 got lost in the
process. There were some concerns that the resize code might be too
optimistic in assuming it can allocate so much memory but anyway the patch
at least fixes the obvious problem until some gets to closer inspection of
the resize code...

								Honza
-- 
Jan Kara [off-list ref]
SUSE Labs, CR