Attempt to open the transport only if the socket is not open.

Fixes an error where opening the transport would attempt to open a socket
in an already bound address.

Signed-off-by: Victor Araujo <ve.ar91@gmail.com>

scribe_client.py

@@ -62,7 +62,8 @@ def openConnection(self):
 
 
     def log(self, category, message):
-        self.transport.open()
+        if (not self.transport.isOpen()):
+            self.transport.open()
         message = base64.b64encode(message).strip()
         log_entry = scribe.LogEntry(category, message)
         result = self.client.Log(messages=[log_entry])