[gtk] Fix comment typo introduced in a32725bc9ab

[Robert Ancell <rancell src gnome org>]

commit e95eeaeef18540d20dad80b824399593c650b346
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed May 9 11:28:53 2018 +1200

    Fix comment typo introduced in a32725bc9ab

 gtk/gtkiconhelper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkiconhelper.c b/gtk/gtkiconhelper.c
index 7c2e80abc4..0a771dabe4 100644
--- a/gtk/gtkiconhelper.c
+++ b/gtk/gtkiconhelper.c
@@ -591,7 +591,7 @@ _gtk_icon_helper_get_size (GtkIconHelper *self,
 
   width = height = 0;
 
-  /* Certain kinds of images are easy to calculate the size for,</cosimoc>3 these
+  /* Certain kinds of images are easy to calculate the size for, these
      we do immediately to avoid having to potentially load the image
      data for something that may not yet be visible */
   switch (gtk_image_definition_get_storage_type (self->def))