Fix tcprules.c:50: warning: implicit declaration of function ‘scan_ulong’

Signed-off-by: Giam Teck Choon <giamteckchoon@gmail.com>
Fix tcprules.c:92: warning: return type defaults to ‘int’

Signed-off-by: Giam Teck Choon <giamteckchoon@gmail.com>
Fix tcprules from hanging and consume nearly 100% CPU due to missing :allow string

Example:

=whatever,allow,RBLSMTPD=""

The above is just a typo of ,allow instead of :allow but in this case will
make tcprules to hang forever and sooner or later consume nearly 100% CPU.

Signed-off-by: Giam Teck Choon <giamteckchoon@gmail.com>