libext2fs: change getpagesize to sysconf

Newer versions of glibc no longer export the getpagesize() prototype when
using recent versions of POSIX (_XOPEN_SOURCE).  So building tdb.c gives
use implicit function declaration warnings.  Fix the issue by using the
portable sysconf() function which returns the same answer.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed