Markov: don't clobber existing database objects in the forked thread

modules/Markov.py

@@ -382,9 +382,9 @@ class Markov(Module):
         try:
             # need to create our own db object, since this is likely going to be in a new thread
             dbfile = self.config.get('dr.botzo', 'database')
-            self.conn = sqlite3.connect(dbfile)
-            self.conn.row_factory = sqlite3.Row
-            db = self.conn
+            conn = sqlite3.connect(dbfile)
+            conn.row_factory = sqlite3.Row
+            db = conn
             query = 'SELECT target FROM markov_chatter_target'
             cursor = db.execute(query)
             results = cursor.fetchall()