[805] a few minor cleanups: typo; position of catch; eliminating an unnecessary

temporary variable.

src/lib/server_common/portconfig.cc

@@ -153,14 +153,12 @@ installListenAddresses(const AddressList& newAddresses,
         LOG_ERROR(logger, SRVCOMM_ADDRESS_FAIL).arg(e.what());
         try {
             setAddresses(service, addressStore);
-        }
-        catch (const exception& e2) {
+        } catch (const exception& e2) {
             LOG_FATAL(logger, SRVCOMM_ADDRESS_UNRECOVERABLE).arg(e2.what());
-            // If we can't set the new ones, nor the old ones, at last
+            // If we can't set the new ones, nor the old ones, at least
             // releasing everything should work. If it doesn't, there isn't
             // anything else we could do.
-            AddressList empty;
-            setAddresses(service, empty);
+            setAddresses(service, AddressList());
             addressStore.clear();
         }
         //Anyway the new configure has problem, we need to notify configure