Fix getting all pull requests without filters
Fix getting all pull requests without filters

Gerhut/node-github,trektech/test1,onesfreedom/node-github,Phanatic/node-github,jamestalmage/node-github,kaizensoze/node-github,reviewninja/node-github,blamattina/node-github,AkashSC/MyRepoDOMO,tempbottle/node-github,dfarr/node-github,kaizensoze/github4,ludovicderochethales/node-github,eistrati/node-github,kstarsinic/node-github,cbargren/github-xhr