[t] Remove a suboptimal getprop test and regain Parrot_PMC_destroy coverage
[t] Remove a suboptimal getprop test and regain Parrot_PMC_destroy coverage

gagern/parrot,tkob/parrot,gagern/parrot,gitster/parrot,gagern/parrot,parrot/parrot,gagern/parrot,youprofit/parrot,FROGGS/parrot,youprofit/parrot,parrot/parrot,FROGGS/parrot,youprofit/parrot,youprofit/parrot,parrot/parrot,gitster/parrot,youprofit/parrot,gitster/parrot,gitster/parrot,tkob/parrot,gagern/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot,tkob/parrot,gitster/parrot,FROGGS/parrot,youprofit/parrot,gitster/parrot,tkob/parrot,gitster/parrot,gagern/parrot,tkob/parrot,gagern/parrot,FROGGS/parrot,youprofit/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot,parrot/parrot