Fix font size menupopup to show sizes more than one char wide.

b=112907; r=sgehani; sr=alecf (checking in for jrgm@netscape.com)

xpfe/components/prefwindow/resources/content/pref-fonts.xul

@@ -73,7 +73,7 @@
       <columns>
         <column/>
         <column flex="1"/>
-        <column width="60"/>
+        <column/>
       </columns>
       
       <rows>