fix imsg header includes in pack_create.c
diff --git a/lib/pack_create.c b/lib/pack_create.c
index 687269a..f8ee356 100644
--- a/lib/pack_create.c
+++ b/lib/pack_create.c
@@ -15,10 +15,12 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#include <sys/types.h>
#include <sys/queue.h>
+#include <sys/uio.h>
#include <sys/stat.h>
-#include <inttypes.h>
+#include <stdint.h>
#include <imsg.h>
#include <stdio.h>
#include <stdlib.h>