(gif_format): Use :index, not :image.

src/ChangeLog

@@ -1,3 +1,7 @@
+2008-08-23  Jason Rumney  <jasonr@gnu.org>
+
+	* image.c (gif_format): Use :index, not :image.
+
 2008-08-21  $,1 P(Bsmail D,Av(Bnmez  <ismail@namtrac.org>  (tiny change)
 
 	* xterm.c (x_delete_display): Don't call XrmDestroyDatabase on

src/image.c

@@ -7937,7 +7937,7 @@ static struct image_keyword gif_format[GIF_LAST] =
   {":conversion",	IMAGE_DONT_CHECK_VALUE_TYPE,		0},
   {":heuristic-mask",	IMAGE_DONT_CHECK_VALUE_TYPE,		0},
   {":mask",		IMAGE_DONT_CHECK_VALUE_TYPE,		0},
-  {":image",		IMAGE_NON_NEGATIVE_INTEGER_VALUE,	0},
+  {":index",		IMAGE_NON_NEGATIVE_INTEGER_VALUE,	0},
   {":background",	IMAGE_STRING_OR_NIL_VALUE,		0}
 };