Fix indentation error in testGetServByName and rewrite loop to avoid clumsy

sentinel variable

Lib/test/test_socket.py

@@ -273,21 +273,18 @@ class GeneralModuleTests(unittest.TestCase):
     def testGetServByName(self):
         # Testing getservbyname()
         # try a few protocols - not everyone has telnet enabled
-        found = 0
         for proto in ("telnet", "ssh", "www", "ftp"):
             try:
                 socket.getservbyname(proto, 'tcp')
-                found = 1
                 break
             except socket.error:
                 pass
             try:
                 socket.getservbyname(proto, 'udp')
-                found = 1
                 break
             except socket.error:
                 pass
-            if not found:
+        else:
             raise socket.error
 
     def testDefaultTimeout(self):