If there is situation when server is closed prior to client, the client pointer point...

If there is situation when server is closed prior to client, the client pointer pointing to server must be reset and check must be there during client deletion

Summary: During mobile product testing, we got a crash with callstack which suggest server is getting deleted prior to client. On valgrind analysis we found invalid write operation with same callstack. callstack is pasted in comment section.

Test Plan: create a situation where server got deleted prior to client.

Reviewers: raster, cedric

Subscribers: govi, rajeshps, jpeg

Differential Revision: https://phab.enlightenment.org/D4152
Change-Id: I725b299b327311b8bbdaf75f79cef58c484c1d2c