DB.js: remove else clause, since we are already exiting early
DB.js: remove else clause, since we are already exiting early

No functional changes.

ether/etherpad-lite,storytouch/etherpad-lite,ether/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,storytouch/etherpad-lite,storytouch/etherpad-lite,aptivate/etherpad-lite,aptivate/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite,joequant/etherpad-lite,joequant/etherpad-lite,aptivate/etherpad-lite