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Don't leak `buf' if realloc fails 

Not an issue in ubase but someone might want to re-use this
function elsewhere.
This commit is contained in:
sin 2014-04-17 16:22:58 +01:00
parent 3803adfd7e
commit e4fa3f5c59
1 changed files with 5 additions and 3 deletions
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8
sysctl.c
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@ -12,7 +12,7 @@ getsysctl(char *variable, char **value)
{ {
char path[PATH_MAX]; char path[PATH_MAX];
char *p; char *p;
char *buf, c; char *buf, *tmp, c;
int fd; int fd;
ssize_t n; ssize_t n;
size_t sz, i; size_t sz, i;
@ -43,11 +43,13 @@ getsysctl(char *variable, char **value)
break; break;
if (i == sz - 1) { if (i == sz - 1) {
sz *= 2; sz *= 2;
buf = realloc(buf, sz); tmp = realloc(buf, sz);
if (!buf) { if (!tmp) {
close(fd); close(fd);
free(buf);
return -1; return -1;
} }
buf = tmp;
} }
buf[i++] = c; buf[i++] = c;
} }