From cb418ab4800f3693742ec7a4f0f63e3368787d8a Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Fri, 21 Jun 2019 17:00:09 +0000
Subject: [PATCH] Fix a memory leak of 104 bytes per hostname resolved.

---
 TargetGroup.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/TargetGroup.cc b/TargetGroup.cc
index 9ea95d612..d074f3de1 100644
--- a/TargetGroup.cc
+++ b/TargetGroup.cc
@@ -861,7 +861,12 @@ int TargetGroup::get_next_host(struct sockaddr_storage *ss, size_t *sslen) {
      limit it to exactly one address). */
   NetBlock *netblock_resolved = this->netblock->resolve();
   if (netblock_resolved != NULL) {
-    this->netblock = netblock_resolved;
+    /* resolve may return the original netblock if it's not a type that needs
+     * to be resolved. Don't delete it! */
+    if (netblock_resolved != this->netblock) {
+      delete this->netblock;
+      this->netblock = netblock_resolved;
+    }
   }
   else {
     error("Failed to resolve \"%s\".", this->netblock->hostname.c_str());