Patch ping: fix warning regression in jcf-io.c

[Per Bothner]

Kaveh R. Ghazi wrote:
> http://gcc.gnu.org/ml/java-patches/2005-q1/msg00002.html
> 
> Ok for mainline?

Ok.

> Okay for 4.0?  (It really just adds the __extension__ keyword.)

Up to Mark (?) - ok with me.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/