sigpipe: init the struct so that first apply ignores

Initializes 'no_signal' to TRUE, so that a call to sigpipe_apply() after
init ignores the signal (unless CURLOPT_NOSIGNAL) is set.

I have read the existing code multiple times now and I think it gets the
initial state reversed this missing to ignore.

Regression from 17e6f06ea37136c36d27

Reported-by: Rasmus Thomsen
Fixes #14344
Closes #14390

diff --git a/lib/sigpipe.h b/lib/sigpipe.h
index b91a2f513339567bcebb85a0f4b6d754b93d7dc9..d78afd905d34146f60a7fc78c0ca726fe8f24c55 100644 (file)
--- a/lib/sigpipe.h
+++ b/lib/sigpipe.h
@@ -39,6 +39,7 @@ struct sigpipe_ignore {
 static void sigpipe_init(struct sigpipe_ignore *ig)
 {
   memset(ig, 0, sizeof(*ig));
+  ig->no_signal = TRUE;
 }
 
 /*