diff options
| author | Michael I. Bushnell <mib@gnu.org> | 1995-06-20 00:10:40 +0000 |
|---|---|---|
| committer | Michael I. Bushnell <mib@gnu.org> | 1995-06-20 00:10:40 +0000 |
| commit | 9436d05db118701702c18217b8d3f052f7eefd1e (patch) | |
| tree | e3bb0fc2ea357e5b5ed2f14e01412e2e5a12f860 | |
| parent | a84a89815f6c2f6581332c0adece2695e33b4382 (diff) | |
(fshelp_fetch_control): Only frob refs if control is non-null.
| -rw-r--r-- | libfshelp/fetch-control.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libfshelp/fetch-control.c b/libfshelp/fetch-control.c index 32b28ddf..26c12d88 100644 --- a/libfshelp/fetch-control.c +++ b/libfshelp/fetch-control.c @@ -25,6 +25,7 @@ fshelp_fetch_control (struct transbox *box, mach_port_t *control) { *control = box->active; - mach_port_mod_refs (mach_task_self (), *control, MACH_PORT_RIGHT_SEND, 1); + if (*control != MACH_PORT_NULL) + mach_port_mod_refs (mach_task_self (), *control, MACH_PORT_RIGHT_SEND, 1); return 0; } |