common/main.c: Include <locale.h>

This fixes a compilation error with musl libc, and is required
according to POSIX to expose LC_ALL and getlocale().

Signed-off-by: Felix Janda <felix.janda@posteo.de>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

1 file changed