[RFC PATCH 02/14] qemu-options: Use g_autofree when calling get_opt_name_value()

[Fabiano Rosas]

The get_opt_name_value function takes two pointer arguments that must
be freed by the callers when not used. This is a good situation to use
g_autofree. Steal the pointers that need to be passed forward.

Signed-off-by: Fabiano Rosas <faro...@suse.de>
---
 util/qemu-option.c | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/util/qemu-option.c b/util/qemu-option.c
index 9fbf425f86..557d5d929c 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -813,27 +813,24 @@ static bool opts_do_parse(QemuOpts *opts, const char 
*params,
                           const char *firstname,
                           bool warn_on_flag, bool *help_wanted, Error **errp)
 {
-    char *option, *value;
     const char *p;
     QemuOpt *opt;
 
     for (p = params; *p;) {
+        g_autofree char *option = NULL;
+        g_autofree char *value = NULL;
+
         p = get_opt_name_value(p, firstname, warn_on_flag, help_wanted, 
&option, &value);
         if (help_wanted && *help_wanted) {
-            g_free(option);
-            g_free(value);
             return false;
         }
         firstname = NULL;
 
         if (!strcmp(option, "id")) {
-            g_free(option);
-            g_free(value);
             continue;
         }
 
-        opt = opt_create(opts, option, value);
-        g_free(option);
+        opt = opt_create(opts, option, g_steal_pointer(&value));
         if (!opt_validate(opt, errp)) {
             qemu_opt_del(opt);
             return false;
@@ -846,16 +843,15 @@ static bool opts_do_parse(QemuOpts *opts, const char 
*params,
 static char *opts_parse_id(const char *params)
 {
     const char *p;
-    char *name, *value;
 
     for (p = params; *p;) {
+        g_autofree char *name = NULL;
+        g_autofree char *value = NULL;
+
         p = get_opt_name_value(p, NULL, false, NULL, &name, &value);
         if (!strcmp(name, "id")) {
-            g_free(name);
-            return value;
+            return g_steal_pointer(&value);
         }
-        g_free(name);
-        g_free(value);
     }
 
     return NULL;
@@ -864,13 +860,13 @@ static char *opts_parse_id(const char *params)
 bool has_help_option(const char *params)
 {
     const char *p;
-    char *name, *value;
     bool ret = false;
 
     for (p = params; *p;) {
+        g_autofree char *name = NULL;
+        g_autofree char *value = NULL;
+
         p = get_opt_name_value(p, NULL, false, &ret, &name, &value);
-        g_free(name);
-        g_free(value);
         if (ret) {
             return true;
         }
-- 
2.53.0