Fix HHVM ArrayObject compatibility
Fix HHVM ArrayObject compatibility

Workaround for https://github.com/facebook/hhvm/issues/1482

Sunchairs/shopware,jhit/shopware,k10r/shopware,patricktreiber/shopware_test,Pttde/shopware,giginos/shopware,zeroseven/shopware,mreiss/shopware,s-haase/shopware,NetInventors/shopware,wesolowski/shopware,simkli/shopware,s-haase/shopware,SvenHerrmann/shopware,VIISON/shopware-4,arvatis/shopware,egoistIT/shopware,wolv-dev/shopware,Pttde/shopware,k10r/shopware,JonidBendo/shopware,philippmahlow/shopware,FiveDigital/shopware,patricktreiber/shopware_test,SvenHerrmann/shopware,wolv-dev/shopware,FiveDigital/shopware,t2oh4e/shopware,jhit/shopware,zeroseven/shopware,SvenHerrmann/shopware,NetInventors/shopware,simkli/shopware,giginos/shopware,zeroseven/shopware,FiveDigital/shopware,egoistIT/shopware,Pttde/shopware,bcremer/shopware,Pttde/shopware,wesolowski/shopware,zeroseven/shopware,jochenmanz/shopware,wesolowski/shopware,giginos/shopware,VIISON/shopware-4,DerRidda/shopware,SvenHerrmann/shopware,egoistIT/shopware,k10r/shopware,wolv-dev/shopware,wesolowski/shopware,jhit/shopware,simkli/shopware,s-haase/shopware,bcremer/shopware,oktupol/shopware,t2oh4e/shopware,zeroseven/shopware,arvatis/shopware,arvatis/shopware,VIISON/shopware-4,s-haase/shopware,DerRidda/shopware,NetInventors/shopware,DerRidda/shopware,philippmahlow/shopware,mreiss/shopware,t2oh4e/shopware,VIISON/shopware-4,k10r/shopware,oktupol/shopware,JonidBendo/shopware,oktupol/shopware,patricktreiber/shopware_test,simkli/shopware,Sunchairs/shopware,jochenmanz/shopware,oktupol/shopware,FiveDigital/shopware,simkli/shopware,jhit/shopware,arvatis/shopware,giginos/shopware,giginos/shopware,NetInventors/shopware,Sunchairs/shopware,Sunchairs/shopware,FiveDigital/shopware,k10r/shopware,bcremer/shopware,DerRidda/shopware,patricktreiber/shopware_test,t2oh4e/shopware,mreiss/shopware,wolv-dev/shopware,egoistIT/shopware,egoistIT/shopware,jochenmanz/shopware,JonidBendo/shopware,DerRidda/shopware,jhit/shopware,JonidBendo/shopware,bcremer/shopware,NetInventors/shopware,wolv-dev/shopware,JonidBendo/shopware,philippmahlow/shopware,wesolowski/shopware,philippmahlow/shopware,VIISON/shopware-4,Pttde/shopware,arvatis/shopware,s-haase/shopware,t2oh4e/shopware,bcremer/shopware,philippmahlow/shopware,oktupol/shopware,Sunchairs/shopware,patricktreiber/shopware_test,jochenmanz/shopware,SvenHerrmann/shopware,jochenmanz/shopware,mreiss/shopware,mreiss/shopware