Avoid g_error_free

Rely on g_autoptr() instead. This avoids having to free the
error.

src/flash.c

@@ -55,12 +55,11 @@ static int dbus_old_brightness = 0;
 static void
 dbus_brightness_init(GObject *src, GAsyncResult *res, gpointer *user_data)
 {
-        GError *err = NULL;
+        g_autoptr(GError) err = NULL;
         dbus_brightness_proxy = g_dbus_proxy_new_finish(res, &err);
         if (!dbus_brightness_proxy || err) {
                 printf("Failed to connect to dbus brightness service %s\n",
                        err->message);
-                g_error_free(err);
                 return;
         }
 }
@@ -140,12 +139,11 @@ set_display_brightness(int brightness)
 static void
 brightness_received(GDBusProxy *proxy, GAsyncResult *res, gpointer user_data)
 {
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
         GVariant *result = g_dbus_proxy_call_finish(proxy, res, &error);
 
         if (!result) {
                 printf("Failed to get display brightness: %s\n", error->message);
-                g_error_free(error);
                 return;
         }
 

src/main.c

@@ -490,7 +490,7 @@ void
 run_open_last_action(GSimpleAction *action, GVariant *param, gpointer user_data)
 {
         char uri[275];
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
 
         if (strlen(last_path) == 0) {
                 return;
@@ -500,7 +500,6 @@ run_open_last_action(GSimpleAction *action, GVariant *param, gpointer user_data)
                 g_printerr("Could not launch image viewer for '%s': %s\n",
                            uri,
                            error->message);
-                g_error_free(error);
         }
 }
 
@@ -508,11 +507,10 @@ void
 run_open_photos_action(GSimpleAction *action, GVariant *param, gpointer user_data)
 {
         char uri[270];
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
         sprintf(uri, "file://%s", g_get_user_special_dir(G_USER_DIRECTORY_PICTURES));
         if (!g_app_info_launch_default_for_uri(uri, NULL, &error)) {
                 g_printerr("Could not launch image viewer: %s\n", error->message);
-                g_error_free(error);
         }
 }
 
@@ -573,13 +571,12 @@ check_point_inside_bounds(int x, int y, int *bounds_x, int *bounds_y)
 static void
 on_zbar_dialog_response(GtkDialog *dialog, int response, char *data)
 {
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
         switch (response) {
         case GTK_RESPONSE_YES:
                 if (!g_app_info_launch_default_for_uri(data, NULL, &error)) {
                         g_printerr("Could not launch application: %s\n",
                                    error->message);
-                        g_error_free(error);
                 }
         case GTK_RESPONSE_ACCEPT: {
                 GdkDisplay *display = gtk_widget_get_display(GTK_WIDGET(dialog));
@@ -925,12 +922,11 @@ update_ui_rotation()
 static void
 display_config_received(GDBusConnection *conn, GAsyncResult *res, gpointer user_data)
 {
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
         GVariant *result = g_dbus_connection_call_finish(conn, res, &error);
 
         if (!result) {
                 printf("Failed to get display configuration: %s\n", error->message);
-                g_error_free(error);
                 return;
         }
 

src/process_pipeline.c

@@ -597,7 +597,7 @@ process_capture_burst(GdkTexture *thumb)
                 burst_dir,
                 capture_fname,
                 save_dng_s);
-        GError *error = NULL;
+        g_autoptr(GError) error = NULL;
         GSubprocess *proc = g_subprocess_new(G_SUBPROCESS_FLAGS_STDOUT_PIPE,
                                              &error,
                                              processing_script,
@@ -609,7 +609,6 @@ process_capture_burst(GdkTexture *thumb)
         if (!proc) {
                 g_printerr("Failed to spawn postprocess process: %s\n",
                            error->message);
-                g_error_free(error);
                 return;
         }