[klibc] include: [sched.h] misssing pid_t definition

Add sys/types.h include to fix:
/usr/lib/klibc/include/sched.h:20:40: error: expected ‘)’ before ‘int’
/usr/lib/klibc/include/sched.h:21:39: error: expected ‘)’ before ‘unsigned’
/usr/lib/klibc/include/sched.h:22:39: error: expected ‘)’ before ‘unsigned’
/usr/lib/klibc/include/sched.h:35:1: error: unknown type name ‘pid_t’

Signed-off-by: maximilian attems <max@stro.at>
1 file changed