fix crash when has for an invalid Reldep is requested.
fix crash when has for an invalid Reldep is requested.

ignatenkobrain/hawkey,mizdebsk/hawkey,ignatenkobrain/hawkey,jsilhan/hawkey,mizdebsk/hawkey,mizdebsk/hawkey,cgwalters/hawkey,megaumi/hawkey,yavor-atanasov/hawkey,MichaelMraka/hawkey,megaumi/hawkey,mluscon/hawkey,rholy/hawkey,rpm-software-management/hawkey,mizdebsk/hawkey,mluscon/hawkey,jsilhan/hawkey,megaumi/hawkey,rholy/hawkey,rholy/hawkey,yavor-atanasov/hawkey,ignatenkobrain/hawkey,mluscon/hawkey,mluscon/hawkey,rpm-software-management/hawkey,jsilhan/hawkey,MichaelMraka/hawkey,Conan-Kudo/hawkey,MichaelMraka/hawkey,Conan-Kudo/hawkey,megaumi/hawkey,yavor-atanasov/hawkey,rpm-software-management/hawkey,MichaelMraka/hawkey,cgwalters/hawkey,jsilhan/hawkey,rholy/hawkey,cgwalters/hawkey,ignatenkobrain/hawkey,Conan-Kudo/hawkey,cgwalters/hawkey,yavor-atanasov/hawkey,rpm-software-management/hawkey,Conan-Kudo/hawkey