[pmc2c] Method::decl fix Possibly forgotten UNUSED warning
[pmc2c] Method::decl fix Possibly forgotten UNUSED warning

for the WB rewrite.

parrot/parrot,tkob/parrot,FROGGS/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,youprofit/parrot,youprofit/parrot,parrot/parrot,FROGGS/parrot,FROGGS/parrot,youprofit/parrot,tkob/parrot,tkob/parrot,tkob/parrot,FROGGS/parrot,tkob/parrot,youprofit/parrot,tkob/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,parrot/parrot,youprofit/parrot,youprofit/parrot,parrot/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot