crecord: convert an instance of bytes to str

Caught by pytype:

    File "/mnt/c/Users/Matt/hg/mercurial/crecord.py", line 1154, in printstring: Function _CursesWindow.addstr was called with the wrong arguments [wrong-arg-types]
             Expected: (self, str: str, ...)
      Actually passed: (self, str: bytes, ...)

Differential Revision: https://phab.mercurial-scm.org/D10203

mercurial/crecord.py

@@ -1152,7 +1152,7 b' class curseschunkselector(object):'
             numtrailingspaces = origlen - strippedlen
 
         if towin:
-            window.addstr(text, colorpair)
+            window.addstr(encoding.strfromlocal(text), colorpair)
         t += text
 
         if showwhtspc: