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scan-build: Be consistent with a needless check in circuitmux.c

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In circuitmux_detach_all_circuits, we check whether an HT iterator
gives us NULL.  That should be impossible for an HT iterator.  But
our checking it has confused scan-build (justly) into thinking that
our later use of HT_NEXT_RMV might not be kosher.  I'm taking the
coward's route here and strengthening the check.  Bugfix on
fd31dd44. (Not a real bug though)
This commit is contained in:
Nick Mathewson 2014-04-18 20:33:47 -04:00
parent 69ea4450ca
commit 7106492571
1 changed files with 5 additions and 1 deletions
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6
src/or/circuitmux.c
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@ -412,7 +412,11 @@ circuitmux_detach_all_circuits(circuitmux_t *cmux, smartlist_t *detached_out)
i = HT_START(chanid_circid_muxinfo_map, cmux->chanid_circid_map); i = HT_START(chanid_circid_muxinfo_map, cmux->chanid_circid_map);
while (i) { while (i) {
to_remove = *i; to_remove = *i;
if (to_remove) {
if (! to_remove) {
log_warn(LD_BUG, "Somehow, an HT iterator gave us a NULL pointer.");
break;
} else {
/* Find a channel and circuit */ /* Find a channel and circuit */
chan = channel_find_by_global_id(to_remove->chan_id); chan = channel_find_by_global_id(to_remove->chan_id);
if (chan) { if (chan) {