config: Include errno.h in mkmakefile.cc

Commit da88842029 ("config: error out on malformed env/hint lines")
added a reference to EINVAL.  In some configurations the bootstrap tools
build fails for lack of errno definitions.

Fixes:	da88842029 ("config: error out on malformed env/hint lines")
Reported by:	syzbot+b1a5d112a737d9a2be9b@syzkaller.appspotmail.com
This commit is contained in:
Mark Johnston 2023-02-23 21:45:01 -05:00
parent 4e696aff69
commit 8c8574acb8

View File

@ -44,6 +44,7 @@ static const char rcsid[] =
*/
#include <sys/param.h>
#include <cerrno>
#include <ctype.h>
#include <err.h>
#include <stdarg.h>