merge compat sys_ipc instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index b50e2a0..bfd6787 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -156,7 +156,7 @@
 cond_syscall(sys_pciconfig_read);
 cond_syscall(sys_pciconfig_write);
 cond_syscall(sys_pciconfig_iobase);
-cond_syscall(sys32_ipc);
+cond_syscall(compat_sys_s390_ipc);
 cond_syscall(ppc_rtas);
 cond_syscall(sys_spu_run);
 cond_syscall(sys_spu_create);