Bug 180215 stop some old profiles from mis-sizing junk mail dialog p=mbockelkamp@web.de r=me sr=bienvenu

mailnews/base/resources/content/junkMail.xul

@@ -44,8 +44,7 @@
 
 <!DOCTYPE dialog SYSTEM "chrome://messenger/locale/junkMail.dtd">
 
-<dialog id="junkMail"
-        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+<dialog xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         xmlns:nc="http://home.netscape.com/NC-rdf#"
         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         windowtype="mailnews:junk"