ipc: Remove extra braces

Fix coding style. In the previous commit, I added braces because,
in addition to changing .data, .extra1 also changed. Now this is not
needed.

Fixes: 1f5c135e ("ipc: Store ipc sysctls in the ipc namespace")
Signed-off-by: Alexey Gladkov <legion@kernel.org>
Link: https://lkml.kernel.org/r/37687827f630bc150210f5b8abeeb00f1336814e.1651584847.git.legion@kernel.org


Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>