surfaceflinger: fix fence fd double close

The unique_fd in BufferLayerConsumer::syncForReleaseLocked is
wrapped in a Fence immediately.  We should not let both own the
fence fd.

Bug: 70976329
Bug: 70982313
Test: manual
Change-Id: Ib4d6bce8519f1b026c59fdfd0e57f93920025b0c
1 file changed