Incorrect spelling "urgentcy"

Throughout the code there are numerous variable and function names incorrectly spelt "urgentcy" instead of "urgency" (both upper and lowercase and in various combinations). Please correct the spelling even though this does not pose an immediate technical problem. Thanks. I find such occurrences in xfce4-panel/plugins/windowmenu/windowmenu-dialog.glade and xfce4-panel/plugins/windowmenu/windowmenu.c.