`-?` parameter causes a program crash

[delphidabbler]

In fact - followed by a punctuation character causes the same crash:

Error: TParams.ParseCommand: fParams[Idx] is not a command (C:\path\to\Src\UParams.pas, line 593)

[delphidabbler]

Fixed at commit 720a3ce

[delphidabbler]

This bug was caused during the development of v3.0.0 when UParams was heavily revised. Therefore DO NOT record this fix in CHANGELOG.md.