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From 1906ff6940bb9f84f0f6a66980354e66b5124558 Mon Sep 17 00:00:00 2001
From: Laszlo Ersek <lersek@redhat.com>
Date: Thu, 12 Sep 2019 13:05:03 +0100
Subject: [PATCH 06/22] opts: remove redundant check for NULL parameter
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RH-Author: Laszlo Ersek <lersek@redhat.com>
Message-id: <20190912130503.14094-7-lersek@redhat.com>
Patchwork-id: 90432
O-Subject: [RHEL-8.2.0 qemu-kvm PATCH 6/6] opts: remove redundant check for NULL parameter
Bugzilla: 1749022
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>

From: Daniel P. Berrangé <berrange@redhat.com>

No callers of get_opt_value() pass in a NULL for the "value" parameter,
so the check is redundant.

RHEL8 notes:

- Context difference in "util/qemu-option.c", function get_opt_value();
  upstream has commit 5c99fa375da1 ("cutils: Provide strchrnul",
  2018-06-29), part of v3.0.0, but downstream lacks it. Harmless, because
  said upstream commit only refactors get_opt_value().

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180514171913.17664-4-berrange@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 0c2f6e7ee99517449b4ed6cf333c2d9456d8fe35)
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
 util/qemu-option.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/util/qemu-option.c b/util/qemu-option.c
index a396d60..940f7a3 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -75,9 +75,7 @@ const char *get_opt_value(const char *p, char **value)
     size_t capacity = 0, length;
     const char *offset;
 
-    if (value) {
-        *value = NULL;
-    }
+    *value = NULL;
     while (1) {
         offset = strchr(p, ',');
         if (!offset) {
@@ -88,11 +86,9 @@ const char *get_opt_value(const char *p, char **value)
         if (*offset != '\0' && *(offset + 1) == ',') {
             length++;
         }
-        if (value) {
-            *value = g_renew(char, *value, capacity + length + 1);
-            strncpy(*value + capacity, p, length);
-            (*value)[capacity + length] = '\0';
-        }
+        *value = g_renew(char, *value, capacity + length + 1);
+        strncpy(*value + capacity, p, length);
+        (*value)[capacity + length] = '\0';
         capacity += length;
         if (*offset == '\0' ||
             *(offset + 1) != ',') {
-- 
1.8.3.1