socket: fix read timeout check (was not reached most of the time)
diff --git a/serial/urlhandler/protocol_socket.py b/serial/urlhandler/protocol_socket.py
index 4fe188d..4538e17 100644
--- a/serial/urlhandler/protocol_socket.py
+++ b/serial/urlhandler/protocol_socket.py
@@ -163,8 +163,8 @@
                     break
             except socket.timeout:
                 # just need to get out of recv from time to time to check if
-                # still alive
-                continue
+                # still alive and timeout did not expire
+                pass
             except socket.error as e:
                 # connection fails -> terminate loop
                 raise SerialException('connection failed (%s)' % e)