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

No functional changes.

src/node/db/DB.js

@@ -45,7 +45,8 @@ exports.init = function() {
         console.error("ERROR: Problem while initalizing the database");
         console.error(err.stack ? err.stack : err);
         process.exit(1);
-      } else {
+      }
+
       // everything ok, set up Promise-based methods
       ['get', 'set', 'findKeys', 'getSub', 'setSub', 'remove', 'doShutdown'].forEach(fn => {
         exports[fn] = util.promisify(db[fn].bind(db));
@@ -67,7 +68,6 @@ exports.init = function() {
       // exposed for those callers that need the underlying raw API
       exports.db = db;
       resolve();
-      }
     });
   });
 }