[Not sure when] Editing console commands no 0x00 at end

[Rachael]

This might be tricky to reproduce but here goes.

1) Type some garbage commands into the console, 2 or 3 will work, they can be nonsensical like "dfjgrogjreorejht" and "foeroioqjwgh" (yes literally just mash the keyboard)

2) Hit the up arrow, and then left arrow a few times to edit your gibberish.

3) Hit Backspace or Del - doesn't matter, delete characters from the middle of the line.

4) Weird things start to happen - your line suddenly gets extra characters on it, the string in the edit box is not properly null-terminated.

[_mental_]

In fact the string is zero terminated however it also has junk character(s) at the end.
This is not the problem of console itself but rather an issue with removal function.
I added clearing of characters beyond string's end in this PR.

[Edward-san]

Isn't it sufficient to just do "Chars[Len() - remlen] = 0;'?

[_mental_]

Probably yes but I didn't check all other functions honestly so I made it in the safest way.