fix crash due to a missing env variable in irc.py and a typo fix (#112)

Thank you!

server/db.py

@@ -97,7 +97,7 @@ class DB(util.LoggedClass):
             self.hist_db = self.db_class('hist', for_sync)
             if self.utxo_db.is_new:
                 self.logger.info('created new database')
-                self.logger.info('creating metadata diretcory')
+                self.logger.info('creating metadata directory')
                 os.mkdir('meta')
                 with util.open_file('COIN', create=True) as f:
                     f.write('ElectrumX databases and metadata for {} {}'

server/irc.py

@@ -35,7 +35,7 @@ class IRC(LoggedClass):
         self.prefix = env.coin.IRC_PREFIX
         self.nick = '{}{}'.format(self.prefix,
                                   env.irc_nick if env.irc_nick else
-                                  double_sha256(env.report_host.encode())
+                                  double_sha256(env.identity.host.encode())
                                   [:5].hex())
         self.peer_regexp = re.compile('({}[^!]*)!'.format(self.prefix))