From 12716019bfdc3bedda1c8489d87a7cd316d016ef Mon Sep 17 00:00:00 2001
From: mischief <mischief@offblast.org>
Date: Thu, 3 May 2018 01:26:09 -0700
Subject: [PATCH] libplumb: fix old leak introduced in 18b8ed1a5ea3

---
 sys/src/libplumb/mesg.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/src/libplumb/mesg.c b/sys/src/libplumb/mesg.c
index 5b111f679..e8aa2b5ad 100644
--- a/sys/src/libplumb/mesg.c
+++ b/sys/src/libplumb/mesg.c
@@ -95,8 +95,10 @@ plumbpackattr(Plumbattr *attr)
 	for(a=attr; a!=nil; a=a->next)
 		n += Strlen(a->name) + 1 + Strlen(quote(a->value, buf, bufe)) + 1;
 	s = malloc(n);
-	if(s == nil)
+	if(s == nil){
+		free(buf);
 		return nil;
+	}
 	t = s;
 	*t = '\0';
 	for(a=attr; a!=nil; a=a->next){