From 4350fcf7a5c4cb7d803db1a0df2b757230b90e25 Mon Sep 17 00:00:00 2001
From: Jim Fehlig <jfehlig@suse.com>
Date: Tue, 7 Jan 2020 11:47:33 -0700
Subject: [PATCH 12/19] util: Check return value of strstr

From coverity scan

vhostmd-1.1/vhostmd/util.c:421: returned_null: "strstr" returns "NULL" (checked 6 out of 7 times).

Signed-off-by: Jim Fehlig <jfehlig@suse.com>
---
 vhostmd/util.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/vhostmd/util.c b/vhostmd/util.c
index 599c5c7..317dbc6 100644
--- a/vhostmd/util.c
+++ b/vhostmd/util.c
@@ -422,10 +422,12 @@ char *vu_str_replace(const char *haystack, const char *origstr, const char *news
    cp = tempstr;
    for (i=0; i <cnt; i++) {
       p = strstr(cp, origstr);
-      *p = '\0';
-      strcat(dest, cp);
-      strcat(dest, newstr);
-      cp = p + origlen;
+      if (p) {
+         *p = '\0';
+         strcat(dest, cp);
+         strcat(dest, newstr);
+         cp = p + origlen;
+      }
    }
    strcat(dest, cp);
 
-- 
2.32.0