catch NULL return from GLOBUS_GSI_SYSCONFIG_GET_USER_CERT_FILENAME() if there's no user certificate available
catch NULL return from GLOBUS_GSI_SYSCONFIG_GET_USER_CERT_FILENAME()
if there's no user certificate available

ellert/globus-toolkit,gridcf/gct,ellert/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,globus/globus-toolkit,gridcf/gct,globus/globus-toolkit,gridcf/gct,globus/globus-toolkit,gridcf/gct,globus/globus-toolkit,globus/globus-toolkit,gridcf/gct,ellert/globus-toolkit,globus/globus-toolkit,ellert/globus-toolkit,gridcf/gct,globus/globus-toolkit,ellert/globus-toolkit,ellert/globus-toolkit