doc: mention EINVAL in seccomp_transaction_start(3)

Document the fact that both seccomp_transaction_start and
seccomp_transaction_commit can return -EINVAL when ctx is invalid.

Signed-off-by: Kir Kolyshkin <[email protected]>
Reviewed-by: Tom Hromatka <[email protected]>
Signed-off-by: Paul Moore <[email protected]>
(imported from commit 600b168)

Author: kolyshkin

doc/man/man3/seccomp_transaction_start.3

@@ -60,6 +60,9 @@ and
 functions return zero on success or one of the following error codes on
 failure:
 .TP
+.B -EINVAL
+The context is invalid.
+.TP
 .B -ENOMEM
 The library was unable to allocate enough memory.
 .\" //////////////////////////////////////////////////////////////////////////