eol: don't refer to a random name-captured ui object

Previously, we used a ui object captured at the time of monkeypatching.

hgext/eol.py

@@ -307,7 +307,7 b' def reposetup(ui, repo):'
                 eolmtime = 0
 
             if eolmtime > cachemtime:
-                ui.debug("eol: detected change in .hgeol\n")
+                self.ui.debug("eol: detected change in .hgeol\n")
                 wlock = None
                 try:
                     wlock = self.wlock()