[gnome-software] trivial: Use g_autofree

[Kalev Lember <klember src gnome org>]

commit d0056dac58a09e287b16b2c6efb18cb833a19de5
Author: Kalev Lember <klember redhat com>
Date:   Thu Dec 17 10:09:31 2015 +0100

    trivial: Use g_autofree

 src/gs-progress-button.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/gs-progress-button.c b/src/gs-progress-button.c
index fe58c82..3b025ab 100644
--- a/src/gs-progress-button.c
+++ b/src/gs-progress-button.c
@@ -35,7 +35,7 @@ G_DEFINE_TYPE (GsProgressButton, gs_progress_button, GTK_TYPE_BUTTON)
 void
 gs_progress_button_set_progress (GsProgressButton *button, guint percentage)
 {
-       gchar *css;
+       g_autofree gchar *css = NULL;
 
        if (percentage == 0)
                css = g_strdup (".install-progress { background-size: 0; }");
@@ -45,7 +45,6 @@ gs_progress_button_set_progress (GsProgressButton *button, guint percentage)
                css = g_strdup_printf (".install-progress { background-size: %d%%; }", percentage);
 
        gtk_css_provider_load_from_data (button->css_provider, css, -1, NULL);
-       g_free (css);
 }
 
 void