Fix sway_log using non initialised output_config pointer
Fix sway_log using non initialised output_config pointer

This fixes a crash where the `oc->name` would be accessed by sway_log()
even when `oc` was NULL.

ascent12/sway,1ace/sway,ascent12/sway,1ace/sway,1ace/sway,ascent12/sway,SirCmpwn/sway