Force free e_client when its buffer is destroied
Force free e_client when its buffer is destroied

The destory request of any surface will trigger to hide its evas object
and to delete e_client object of the surface. Those hide process of evas
object generates hide animation corresponding to its shadow style. In the
case, long animation can cause SIGSEGV by trying to access shared memory
which is already munmapped. This revision prevents the situation by free of
evas object immediately when the buffer is destroied.

Change-Id: I2b404270cec581354c367390fb0040f868cbe556
Signed-off-by: MinJeong Kim <24556705797ea9c691c6aa52e5846988e670d796@samsung.com>

tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment