From: Guy Harris <guy@alum.mit.edu>
Date: Fri, 31 May 2019 17:35:25 +0000 (-0700)
Subject: Check for an empty description by checking if the first character is NUL.
X-Git-Tag: libpcap-1.10-bp~485
X-Git-Url: https://git.tcpdump.org/libpcap/commitdiff_plain/593769c3637583653bafa924fe348115016618c3

Check for an empty description by checking if the first character is NUL.
---

diff --git a/pcap.c b/pcap.c
index d9917a21..0d985199 100644
--- a/pcap.c
+++ b/pcap.c
@@ -802,7 +802,7 @@ get_if_description(const char *name)
 		}
 #endif /* __FreeBSD__ */
 		close(s);
-		if (description != NULL && strlen(description) == 0) {
+		if (description != NULL && description[0] == '\0') {
 			/*
 			 * Description is empty, so discard it.
 			 */