Fix WINC client.send() zeros data being sent.
Fix WINC client.send() zeros data being sent.

* Issue #129

kwagyeman/openmv,openmv/openmv,iabdalkader/openmv,openmv/openmv,kwagyeman/openmv,iabdalkader/openmv,openmv/openmv,kwagyeman/openmv,openmv/openmv,kwagyeman/openmv,iabdalkader/openmv,iabdalkader/openmv