Describe the bug
I run a simple UDP port and service scan and I see this warning:

Your ports include "T:" but you haven't specified any TCP scan type
Even though I did not specify any port ranges, even less with a "T:"

To Reproduce

nmap -sUV -v 192.168.0.1
[...]
Completed UDP Scan at [...]
Your ports include "T:" but you haven't specified any TCP scan type
Initiation Service scan at [...]

Expected behavior
This warning should not appear.

Version info (please complete the following information):

• OS: Windows or Kali
• Output of nmap --version:

Nmap version 7.90 ( https://nmap.org )
Platform: i686-pc-windows-windows
Compiled with: nmap-liblua-5.3.5 openssl-1.1.1h nmap-libssh2-1.9.0 nmap-libz-1.2.11 nmap-libpcre-7.6 Npcap-1.00 nmap-libdnet-1.12 ipv6
Compiled without:
Available nsock engines: iocp poll select

Additional context
The message is from getpts_aux() so I have added a printf for origexpr and it appears that the offending port filter is "T:9100-9107 which we can found in the nmap-service-probes files to exclude those TCP ports! I suppose that even though I did not specificy any port range, those were added silently by Nmap to exclude them (to not scan printer ports I guess).