runtests: dummy init the ports variables to avoid warnings
... and generate something that can help debug test cases.
diff --git a/tests/runtests.pl b/tests/runtests.pl
index d853a4a..3c568f6 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -124,37 +124,39 @@
my $minport; # minimum used port number
my $maxport; # maximum used port number
-my $MQTTPORT="[not running]"; # MQTT server port
-my $HTTPPORT; # HTTP server port
-my $HTTP6PORT; # HTTP IPv6 server port
-my $HTTPSPORT; # HTTPS (stunnel) server port
-my $FTPPORT; # FTP server port
-my $FTP2PORT; # FTP server 2 port
-my $FTPSPORT; # FTPS (stunnel) server port
-my $FTP6PORT; # FTP IPv6 server port
-my $TFTPPORT; # TFTP
-my $TFTP6PORT; # TFTP
-my $SSHPORT; # SCP/SFTP
-my $SOCKSPORT; # SOCKS4/5 port
-my $POP3PORT; # POP3
-my $POP36PORT; # POP3 IPv6 server port
-my $IMAPPORT; # IMAP
-my $IMAP6PORT; # IMAP IPv6 server port
-my $SMTPPORT; # SMTP
-my $SMTP6PORT; # SMTP IPv6 server port
-my $RTSPPORT; # RTSP
-my $RTSP6PORT; # RTSP IPv6 server port
-my $GOPHERPORT; # Gopher
-my $GOPHER6PORT; # Gopher IPv6 server port
-my $HTTPTLSPORT; # HTTP TLS (non-stunnel) server port
-my $HTTPTLS6PORT; # HTTP TLS (non-stunnel) IPv6 server port
-my $HTTPPROXYPORT; # HTTP proxy port, when using CONNECT
+my $noport="[not running]";
+
+my $MQTTPORT=$noport; # MQTT server port
+my $HTTPPORT=$noport; # HTTP server port
+my $HTTP6PORT=$noport; # HTTP IPv6 server port
+my $HTTPSPORT=$noport; # HTTPS (stunnel) server port
+my $FTPPORT=$noport; # FTP server port
+my $FTP2PORT=$noport; # FTP server 2 port
+my $FTPSPORT=$noport; # FTPS (stunnel) server port
+my $FTP6PORT=$noport; # FTP IPv6 server port
+my $TFTPPORT=$noport; # TFTP
+my $TFTP6PORT=$noport; # TFTP
+my $SSHPORT=$noport; # SCP/SFTP
+my $SOCKSPORT=$noport; # SOCKS4/5 port
+my $POP3PORT=$noport; # POP3
+my $POP36PORT=$noport; # POP3 IPv6 server port
+my $IMAPPORT=$noport; # IMAP
+my $IMAP6PORT=$noport; # IMAP IPv6 server port
+my $SMTPPORT=$noport; # SMTP
+my $SMTP6PORT=$noport; # SMTP IPv6 server port
+my $RTSPPORT=$noport; # RTSP
+my $RTSP6PORT=$noport; # RTSP IPv6 server port
+my $GOPHERPORT=$noport; # Gopher
+my $GOPHER6PORT=$noport; # Gopher IPv6 server port
+my $HTTPTLSPORT=$noport; # HTTP TLS (non-stunnel) server port
+my $HTTPTLS6PORT=$noport; # HTTP TLS (non-stunnel) IPv6 server port
+my $HTTPPROXYPORT=$noport; # HTTP proxy port, when using CONNECT
+my $HTTP2PORT=$noport; # HTTP/2 server port
+my $DICTPORT=$noport; # DICT server port
+my $SMBPORT=$noport; # SMB server port
+my $SMBSPORT=$noport; # SMBS server port
+my $NEGTELNETPORT=$noport; # TELNET server port with negotiation
my $HTTPUNIXPATH; # HTTP server Unix domain socket path
-my $HTTP2PORT; # HTTP/2 server port
-my $DICTPORT; # DICT server port
-my $SMBPORT; # SMB server port
-my $SMBSPORT; # SMBS server port
-my $NEGTELNETPORT; # TELNET server port with negotiation
my $SSHSRVMD5 = "[uninitialized]"; # MD5 of ssh server public key
