[Patch] PR java/22113: Fix buffer overflow in Java lexer for FP literals

[Ranjit Mathew]

Hi,

  This is a naive but effective patch for PR java/22113 where
the 'literal_token' buffer of do_java_lex() in lex.c for reading
in an FP literal was overflowing in cases like the Jacks testcase
3.10.2-round-6.

Tested on i686-pc-linux-gnu with Jacks included. Produces
no new failures and fixes the recent FAIL-ing of 3.10.2-round-6
on i686-pc-linux-gnu at least.

OK for mainline?

Thanks,
Ranjit.

:ADDPATCH java:

-- 
Ranjit Mathew       Email: rmathew AT gmail DOT com

Bangalore, INDIA.     Web: http://ranjitmathew.hostingzero.com/
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