[gtk+] gdkrgba: Use %g instead of %.17g to print alpha

[Benjamin Otte <otte src gnome org>]

commit 96a485d8b22e7ac2bc155350b8d084fd0e0f6292
Author: Benjamin Otte <otte redhat com>
Date:   Mon Nov 2 17:04:39 2015 +0100

    gdkrgba: Use %g instead of %.17g to print alpha
    
    This way 0.3 isn't printed as 0.29999999999999

 gdk/gdkrgba.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkrgba.c b/gdk/gdkrgba.c
index 43195dd..2a8e096 100644
--- a/gdk/gdkrgba.c
+++ b/gdk/gdkrgba.c
@@ -366,7 +366,7 @@ gdk_rgba_to_string (const GdkRGBA *rgba)
     {
       gchar alpha[G_ASCII_DTOSTR_BUF_SIZE];
 
-      g_ascii_dtostr (alpha, G_ASCII_DTOSTR_BUF_SIZE, CLAMP (rgba->alpha, 0, 1));
+      g_ascii_formatd (alpha, G_ASCII_DTOSTR_BUF_SIZE, "%g", CLAMP (rgba->alpha, 0, 1));
 
       return g_strdup_printf ("rgba(%d,%d,%d,%s)",
                               (int)(0.5 + CLAMP (rgba->red, 0., 1.) * 255.),