[PATCH] Fix unused variable warning

Attached patch fixes the following build warnings:

perlmini.c: In function `S_incpush':
perlmini.c:4358: warning: unused variable `addoldvers'


perl.c: In function `S_incpush':
perl.c:4358: warning: unused variable `addoldvers'

• [PATCH] Fix unused variable warning by Jerry D. Hedden
• Re: [PATCH] Fix unused variable warning by Nicholas Clark