Don't segfault when parsing fails
Don't segfault when parsing fails

jasperla/augeas,bkearney/augeas,lutter/augeas,hercules-team/augeas-do-not-use,ptoscano/augeas,hercules-team/augeas-do-not-use,bkearney/augeas,kumy/augeas,jjlin/augeas,MikaelSmith/augeas,manandbytes/augeas,manandbytes/augeas,lutter/augeas,jjlin/augeas,pevalme/augeas,jasperla/augeas,kumy/augeas,GeoffWilliams/augeas,hercules-team/augeas-do-not-use,lutter/augeas,mchf/augeas,hercules-team/augeas,mlichvar/augeas,kunkku/augeas,jjlin/augeas,raphink/augeas,bkearney/augeas,dafugg/augeas,mlichvar/augeas,pevalme/augeas,kunkku/augeas,dafugg/augeas,mchf/augeas,kumy/augeas,ptoscano/augeas,hercules-team/augeas,dafugg/augeas,bkearney/augeas,domcleal/augeas,jtopjian/augeas,GeoffWilliams/augeas,ptoscano/augeas,pevalme/augeas,mlichvar/augeas,MikaelSmith/augeas,camptocamp/augeas,camptocamp/augeas,jtopjian/augeas,kunkku/augeas,camptocamp/augeas,domcleal/augeas,kumy/augeas,domcleal/augeas,camptocamp/augeas,raphink/augeas