Fix unicode errors when writing to sys.stdout.

doc/changelog.txt

@@ -3,6 +3,8 @@
 Fixes:
 - checking: Fix broken anchor checking.
   Closes: SF bug #3140765
+- logging: Allow Unicode strings to be written to stdout without
+  encoding errors.
 
 Changes:
 

linkcheck/logger/__init__.py

@@ -184,7 +184,7 @@ class Logger (object):
         elif 'fd' in args:
             self.fd = args['fd']
         else:
-            self.fd = sys.stdout
+            self.fd = codecs.getwriter(self.output_encoding)(sys.stdout)
 
     def start_fileoutput (self):
         path = os.path.dirname(self.filename)