Bug 630135 - No UI feedback when imapx connection fails
Bug 630135 - No UI feedback when imapx connection fails

Don't call camel_operation_cancel(NULL). That has undesired effects.

Only call camel_operation_cancel(server->op) if it's non-NULL -- i.e. if the
parser thread had actually started up and set it.

matzipan/evolution-data-server,Distrotech/evolution-data-server,gcampax/evolution-data-server,gcampax/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server