fix possible fd leak, unrestored cancellation state on dns socket fail
diff --git a/src/network/res_msend.c b/src/network/res_msend.c
index de7f615..3e01800 100644
--- a/src/network/res_msend.c
+++ b/src/network/res_msend.c
@@ -76,7 +76,11 @@
fd = socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
family = AF_INET;
}
- if (fd < 0 || bind(fd, (void *)&sa, sl) < 0) return -1;
+ if (fd < 0 || bind(fd, (void *)&sa, sl) < 0) {
+ if (fd >= 0) close(fd);
+ pthread_setcancelstate(cs, 0);
+ return -1;
+ }
/* Past this point, there are no errors. Each individual query will
* yield either no reply (indicated by zero length) or an answer
