Clean up whitespace (mainloop had a swath of 4-space indentation, while everything else used 2-space; also removed some tabs towards the beginning.)

git-svn-id: https://svn.perl.org/qpsmtpd/trunk@465 958fd67b-6ff1-0310-b445-bb7760255be9

qpsmtpd-forkserver

@@ -20,7 +20,7 @@ $| = 1;
 # Configuration
 my $MAXCONN   = 15;                  # max simultaneous connections
 my $PORT      = 2525;                # port number
-my @LOCALADDR;                                  # ip address to bind to
+my @LOCALADDR;                       # ip address(es) to bind to
 my $USER      = 'smtpd';             # user to suid to
 my $MAXCONNIP = 5;                   # max simultaneous connections from one IP
 my $PID_FILE   = '';