free(9) sizes for sysv_msg

[Martin Pieuchot]

Trivial one, ok?

Index: kern/sysv_msg.c
===================================================================
RCS file: /cvs/src/sys/kern/sysv_msg.c,v
retrieving revision 1.33
diff -u -p -r1.33 sysv_msg.c
--- kern/sysv_msg.c     15 Sep 2016 02:00:16 -0000      1.33
+++ kern/sysv_msg.c     29 Nov 2018 18:47:05 -0000
@@ -699,7 +699,7 @@ sysctl_sysvmsg(int *name, u_int namelen,
                    msginfo.msgmni * sizeof(struct msqid_ds);
 
                if (*sizep < infolen) {
-                       free(info, M_TEMP, 0);
+                       free(info, M_TEMP, infolen);
                        return (ENOMEM);
                }
 
@@ -716,7 +716,7 @@ sysctl_sysvmsg(int *name, u_int namelen,
 
                error = copyout(info, where, infolen);
 
-               free(info, M_TEMP, 0);
+               free(info, M_TEMP, infolen);
 
                return (error);