Don't use try/except/finally so that python 2.4 works.

Use try/(try/except)/finally instead.  There was only once case of this.

Thanks to Wayne Scott and nisc for pointing this out.

server.py

@@ -78,6 +78,7 @@ def start_hostwatch(seed_hosts):
     if not pid:
         # child
         rv = 99
+        try:
             try:
                 s2.close()
                 os.dup2(s1.fileno(), 1)