[gtksourceview/gnome-3-20] gutterrendererlines: remove allocations from ::query_data

[Paolo Borelli <pborelli src gnome org>]

commit ab30ecc23462d285cd608d7e8f5df064166522cb
Author: Christian Hergert <christian hergert me>
Date:   Wed Apr 20 18:37:47 2016 -0700

    gutterrendererlines: remove allocations from ::query_data
    
    This makes the cost of ::query_data() for the line gutter renderer
    equivalent to the cost of the g_strdup_printf() previously.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=765356

 gtksourceview/gtksourcegutterrendererlines.c |   16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterrendererlines.c b/gtksourceview/gtksourcegutterrendererlines.c
index fac2268..5a07102 100644
--- a/gtksourceview/gtksourcegutterrendererlines.c
+++ b/gtksourceview/gtksourcegutterrendererlines.c
@@ -88,19 +88,18 @@ recalculate_size (GtkSourceGutterRendererLines *renderer)
 
        if (num_digits != renderer->priv->num_line_digits)
        {
-               gchar *markup;
+               gchar markup[24];
                gint size;
 
                renderer->priv->num_line_digits = num_digits;
 
                num_lines = MAX (num_lines, 99);
 
-               markup = g_strdup_printf ("<b>%d</b>", num_lines);
+               g_snprintf (markup, sizeof markup, "<b>%d</b>", num_lines);
                gtk_source_gutter_renderer_text_measure_markup (GTK_SOURCE_GUTTER_RENDERER_TEXT (renderer),
                                                                markup,
                                                                &size,
                                                                NULL);
-               g_free (markup);
 
                gtk_source_gutter_renderer_set_size (GTK_SOURCE_GUTTER_RENDERER (renderer),
                                                     size);
@@ -196,8 +195,9 @@ gutter_renderer_query_data (GtkSourceGutterRenderer      *renderer,
                             GtkTextIter                  *end,
                             GtkSourceGutterRendererState  state)
 {
-       gchar *text;
+       gchar text[24];
        gint line;
+       gint len;
        gboolean current_line;
 
        line = gtk_text_iter_get_line (start) + 1;
@@ -207,18 +207,16 @@ gutter_renderer_query_data (GtkSourceGutterRenderer      *renderer,
 
        if (current_line)
        {
-               text = g_strdup_printf ("<b>%d</b>", line);
+               len = g_snprintf (text, sizeof text, "<b>%d</b>", line);
        }
        else
        {
-               text = g_strdup_printf ("%d", line);
+               len = g_snprintf (text, sizeof text, "%d", line);
        }
 
        gtk_source_gutter_renderer_text_set_markup (GTK_SOURCE_GUTTER_RENDERER_TEXT (renderer),
                                                    text,
-                                                   -1);
-
-       g_free (text);
+                                                   len);
 }
 
 static gint