Fix verify/identify error handling
Fix verify/identify error handling

If verify_start failed, we need to run verify_stop. Same for
identification.

FabriceSalvaire/libfprint-baspi,FabriceSalvaire/libfprint-baspi,payden/libfprint,payden/libfprint,bhdn/libfprint-vkapi,zemen/libfprint,Gnate/libfprint,yingted/etes603,hyperair/fprint-bsapi,jipumarino/libfprint,rmarku/libfprint,ccsystems/libfprint,anarsoul/libfprint,zOrg1331/libfprint,abhishekgahlot/fprint-bsapi,jipumarino/libfprint,hyperair/fprint-bsapi,abhishekgahlot/fprint-bsapi,freedesktop-unofficial-mirror/libfprint__libfprint,anarsoul/libfprint,abhishekgahlot/fprint-bsapi,jipumarino/libfprint,ccsystems/libfprint,micw/libfprint,FabriceSalvaire/libfprint-baspi,yingted/etes603,Gnate/libfprint,rmarku/libfprint,zemen/libfprint,iafilatov/libfprint,bhdn/libfprint-vkapi,payden/libfprint,zOrg1331/libfprint,sbambrough/libfprint_extended,ccsystems/libfprint,dsd/libfprint,PDXostc/libfprint,kunalg/libfprint,sbambrough/libfprint_extended,micw/libfprint,freedesktop-unofficial-mirror/libfprint__libfprint,Gnate/libfprint,PDXostc/libfprint,zOrg1331/libfprint,kunalg/libfprint,freedesktop-unofficial-mirror/libfprint__libfprint,PDXostc/libfprint,yingted/etes603,dsd/libfprint,rmarku/libfprint,abhishekgahlot/libfprint,bhdn/libfprint-vkapi,zemen/libfprint,sbambrough/libfprint_extended,kunalg/libfprint,abhishekgahlot/libfprint,hyperair/fprint-bsapi,abhishekgahlot/libfprint,micw/libfprint