6136 sysmacros.h unnecessarily polutes the namespace

@@ -14,10 +14,12 @@
 #include <sendmail.h>
 #include <sm/sem.h>
 
 SM_RCSID("@(#)$Id: queue.c,v 8.987 2009/12/18 17:08:01 ca Exp $")
 
+#include <sys/types.h>
+#include <sys/mkdev.h>
 #include <dirent.h>
 
 # define RELEASE_QUEUE  (void) 0
 # define ST_INODE(st)   (st).st_ino