ANDROID: fix build breakage in virtio_transport_common.c

In commit 946c7600 ("virtio/vsock: Fix accept_queue memory leak"), a
change is made that breaks the build due to previous changes being
reverted in the Android tree to preserve the abi.  Fix this up by
resolving the build error so that the real bugfix still works properly.

Fixes: 946c7600 ("virtio/vsock: Fix accept_queue memory leak")
Change-Id: Idd5754459814e3e7db7be1581de2af920b402f5a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>