linux-next: ttydev tree build warning

Hi Alan,

Today's linux-next build (powerpc ppc64_defconfig) produced this warning:

fs/devpts/inode.c:324: warning: 'compare_init_pts_sb' defined but not used

That function is only used if CONFIG_DEVPTS_MULTIPLE_INSTANCES is set, so
needs moving inside the ifdef just below it.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/