crecord: redraw the screen on ctrl-L

This is the normal use of Ctrl-L, so I think this is going to be what most
people expect it to do. We're keeping the adjustment of what line we're scrolled
to as well. I believe both to be necessary to handle otherwise inescapable
situations when we've got screen corruption or edge-cases during window
resizing.

Differential Revision: https://phab.mercurial-scm.org/D6130

mercurial/crecord.py

@@ -1730,8 +1730,11 b' are you sure you want to review/edit and'
             self.stdscr.clear()
             self.stdscr.refresh()
         elif curses.unctrl(keypressed) in ["^L"]:
-            # scroll the current line to the top of the screen
+            # scroll the current line to the top of the screen, and redraw
+            # everything
             self.scrolllines(self.selecteditemstartline)
+            self.stdscr.clear()
+            self.stdscr.refresh()
 
     def main(self, stdscr):
         """