Remove reference to 'ifaceName' from configureBridge comment.

The argument ifaceName was removed in a much earlier commit.

Signed-off-by: Sami Wagiaalla <swagiaal@redhat.com>

daemon/networkdriver/bridge/driver.go

@@ -253,9 +253,9 @@ func setupIPTables(addr net.Addr, icc, ipmasq bool) error {
 	return nil
 }
 
-// configureBridge attempts to create and configure a network bridge interface named `ifaceName` on the host
+// configureBridge attempts to create and configure a network bridge interface named `bridgeIface` on the host
 // If bridgeIP is empty, it will try to find a non-conflicting IP from the Docker-specified private ranges
-// If the bridge `ifaceName` already exists, it will only perform the IP address association with the existing
+// If the bridge `bridgeIface` already exists, it will only perform the IP address association with the existing
 // bridge (fixes issue #8444)
 // If an address which doesn't conflict with existing interfaces can't be found, an error is returned.
 func configureBridge(bridgeIP string) error {