From c20d1e95b8be9db5bb9a5c3c74f5678b19147beb Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 6 Dec 2021 10:50:56 +0100
Subject: fixup multi to tighten a memory leak in OOM cases

---
 lib/multi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/multi.c b/lib/multi.c
index eb593fce3..c34780f73 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -2841,8 +2841,10 @@ static CURLMcode singlesocket(struct Curl_multi *multi,
 
       /* add 'data' to the transfer hash on this socket! */
       if(!Curl_hash_add(&entry->transfers, (char *)&data, /* hash key */
-                        sizeof(struct Curl_easy *), data))
+                        sizeof(struct Curl_easy *), data)) {
+        Curl_hash_destroy(&entry->transfers);
         return CURLM_OUT_OF_MEMORY;
+      }
     }
 
     comboaction = (entry->writers? CURL_POLL_OUT : 0) |
-- 
cgit v1.2.1