ctld: correctly parse LUN size on 32-bit arches

Disk offset values must always be 64-bit, not size_t.

PR:		214874
Submitted by:	[email protected]
MFC after:	2 weeks
Event:		January 2025 Bug-busting session

Author: asomers

usr.sbin/ctld/ctld.c

@@ -1568,7 +1568,7 @@ lun_set_serial(struct lun *lun, const char *value)
 }
 
 void
-lun_set_size(struct lun *lun, size_t value)
+lun_set_size(struct lun *lun, int64_t value)
 {
 
 	lun->l_size = value;

usr.sbin/ctld/ctld.h

@@ -349,7 +349,7 @@ void			lun_set_device_id(struct lun *lun, const char *value);
 void			lun_set_path(struct lun *lun, const char *value);
 void			lun_set_scsiname(struct lun *lun, const char *value);
 void			lun_set_serial(struct lun *lun, const char *value);
-void			lun_set_size(struct lun *lun, size_t value);
+void			lun_set_size(struct lun *lun, int64_t value);
 void			lun_set_ctl_lun(struct lun *lun, uint32_t value);
 
 struct option		*option_new(struct options *os,