[gtk+] Fix color name (as of rgb.txt) parsing in symbolic colors

[Carlos Garnacho <carlosg src gnome org>]

commit e5e95934bac824d5cbf791491bbc3a3374604935
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Dec 21 18:44:53 2010 +0100

    Fix color name (as of rgb.txt) parsing in symbolic colors
    
    The end of the substring wasn't being detected properly.

 gtk/gtkcssprovider.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index c318ec9..c8d7624 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -2116,8 +2116,9 @@ symbolic_color_parse_str (const gchar  *string,
         }
       else
         {
-          /* color name? parse until first whitespace */
-          while (*end != ' ' && *end != '\0')
+          /* Color name */
+          while (*end != '\0' &&
+                 (g_ascii_isalnum (*end) || *end == ' '))
             end++;
         }