From bb7420180497f6087cd2d894253beb2532a0569e Mon Sep 17 00:00:00 2001
From: Paul Dreik <github@pauldreik.se>
Date: Mon, 23 Sep 2019 13:10:12 +0200
Subject: [PATCH] doh: return early if there is no time left

Closes #4406
---
 lib/doh.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/doh.c b/lib/doh.c
index 5a76d6d87..05a6cc235 100644
--- a/lib/doh.c
+++ b/lib/doh.c
@@ -240,7 +240,10 @@ static CURLcode dohprobe(struct Curl_easy *data,
   }
 
   timeout_ms = Curl_timeleft(data, NULL, TRUE);
-
+  if(timeout_ms <= 0) {
+    result = CURLE_OPERATION_TIMEDOUT;
+    goto error;
+  }
   /* Curl_open() is the internal version of curl_easy_init() */
   result = Curl_open(&doh);
   if(!result) {