Fix LGTM reported issues

setup.py

@@ -46,7 +46,7 @@ def version_scheme(version):
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
         "Intended Audience :: End Users/Desktop",
-        "License :: OSI Approved :: "
+        "License :: OSI Approved :: " +
             "GNU Lesser General Public License v2 or later (LGPLv2+)",
         "Operating System :: OS Independent",
         "Programming Language :: Python :: 3.8",

sshuttle/cmdline.py

@@ -33,7 +33,8 @@ def main():
                 parser.error('exactly zero arguments expected')
             return firewall.main(opt.method, opt.syslog)
         elif opt.hostwatch:
-            return hostwatch.hw_main(opt.subnets, opt.auto_hosts)
+            hostwatch.hw_main(opt.subnets, opt.auto_hosts)
+            return 0
         else:
             # parse_subnetports() is used to create a list of includes
             # and excludes. It is called once for each parameter and

sshuttle/methods/__init__.py

@@ -7,8 +7,6 @@
 
 
 def original_dst(sock):
-    ip = "0.0.0.0"
-    port = -1
     try:
         family = sock.family
         SO_ORIGINAL_DST = 80
@@ -73,7 +71,7 @@ def recv_udp(udp_listener, bufsize):
     def send_udp(self, sock, srcip, dstip, data):
         if srcip is not None:
             raise Fatal("Method %s send_udp does not support setting srcip to %r"
-                  % (self.name, srcip))
+                        % (self.name, srcip))
         sock.sendto(data, dstip)
 
     def setup_tcp_listener(self, tcp_listener):