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Don't reference NULL pointer.

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MFC after:	2 weeks
This commit is contained in:
Xin LI 2017-01-24 07:48:36 +00:00
parent a6bac5b604
commit 1d1e1f6311
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=312683
1 changed files with 3 additions and 1 deletions
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4
usr.bin/mail/popen.c
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@ -303,7 +303,7 @@ findchild(pid_t pid, int dont_alloc)
cpp = &(*cpp)->link)
;
if (*cpp == NULL) {
if (dont_alloc)
if (dont_alloc)
return(NULL);
if (child_freelist) {
*cpp = child_freelist;
@ -344,6 +344,8 @@ sigchild(int signo __unused)
save_errno = errno;
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
cp = findchild(pid, 1);
if (cp == NULL)
continue;
if (cp->free)
delchild(cp);
else {