Use pam_putenv to export KRBTKFILE.

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@7454 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/auth/pam/pam.c

@@ -229,6 +229,7 @@ pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
     strcpy(var, "KRBTKFILE=");
     strcat(var, tkt);
     putenv(var);
+    pam_putenv(pamh, var);
     if(k_hasafs()){
 	k_setpag();
 	krb_afslog_home(0, 0, homedir);