msm: ipc_socket: fix leak of kernel memory to userspace

Limit the size of copy to the minimum of what was asked
for or the number of results returned to prevent leaking of
uninitialized kernel memory to userspace.

Bug: 24157888

Signed-off-by: Patrick Tjin <pattjin@google.com>
Change-Id: I7433135ea3345905c053a81d0d759619b46c1430
1 file changed