File make-getnameinfo-errors-nonfatal-in-report_sock.patch of Package netcat-openbsd

From: Guilhem Moulin <guilhem@debian.org>
Date: Fri, 05 Jun 2020 03:11:21 +0200
Subject: Make getnameinfo(3) errors non-fatal in report_sock()

report_sock() is used to show the peer's address/name and port when the
‘-v’ flag is set.  Reverse resolution errors need not be fatal.

Closes: #961378
---
 netcat.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/netcat.c
+++ b/netcat.c
@@ -2215,9 +2215,11 @@ report_sock(const char *msg, const struc
 		case 0:
 			break;
 		case EAI_SYSTEM:
-			err(1, "getnameinfo");
+			warn("getnameinfo");
+			return;
 		default:
-			errx(1, "getnameinfo: %s", gai_strerror(herr));
+			warnx("getnameinfo: %s", gai_strerror(herr));
+			return;
 	}
 
 	fprintf(stderr, "%s on %s %s\n", msg, host, port);