[cage] Fix -Wreturn-type
[cage] Fix -Wreturn-type

control may reach end of non-void function in Parrot_interp_info_s()
Return empty string in case of errors

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