server/rz_api_common: validate_obj__attr_diff: add (unused) missing ctx variable to signature
server/rz_api_common: validate_obj__attr_diff: add (unused) missing ctx variable to signature

ozFri/rhizi,shlomif/rhizi,tlevine/rhizi,yuvadm/rhizi,yuvadm/rhizi,Rhizi/rhizi,cben/rhizi,ozFri/rhizi,Rhizi/rhizi,cben/rhizi,shlomif/rhizi,cben/rhizi,yuvadm/rhizi,cben/rhizi,shlomif/rhizi,tlevine/rhizi,shlomif/rhizi,Rhizi/rhizi,Rhizi/rhizi,yuvadm/rhizi,ozFri/rhizi,tlevine/rhizi,ozFri/rhizi,tlevine/rhizi