configitems: register the 'convert.cvsps.mergeto' config

hgext/convert/__init__.py

@@ -40,6 +40,9 b" configitem('convert', 'cvsps.fuzz',"
 configitem('convert', 'cvsps.mergefrom',
     default=None,
 )
+configitem('convert', 'cvsps.mergeto',
+    default=None,
+)
 
 # Commands definition was moved elsewhere to ease demandload job.
 

hgext/convert/cvs.py

@@ -81,7 +81,7 b' class convert_cvs(converter_source):'
             db = cvsps.createlog(self.ui, cache=cache)
             db = cvsps.createchangeset(self.ui, db,
                 fuzz=int(self.ui.config('convert', 'cvsps.fuzz')),
-                mergeto=self.ui.config('convert', 'cvsps.mergeto', None),
+                mergeto=self.ui.config('convert', 'cvsps.mergeto'),
                 mergefrom=self.ui.config('convert', 'cvsps.mergefrom'))
 
             for cs in db: