Miscellaneous logs fix for garage

[Tiny-DM]

What type of PR is this.

1. Bug
2. Change
3. Enhancement

What have you changed and why?

Information:
Changed the line to update the garage interface to only work when there's someone in the garage interface, removing 2 startup errors and 1 error every time someone garaged a vehicle. All errors purely present in the logs with no gameplay impact

Please specify which Issue this PR Resolves.

closes this discord comment from John

Please verify the following and ensure all checks are completed.

1. Have you loaded the mission in LAN host?
2. Have you loaded the mission on a dedicated server?

Is further testing or are further changes required?

1. No
2. Yes (Please provide further detail below.)

[rautamiekka]

Trying to check a nil against anything will break, so it's 1 of the cases where lazy eval is mandatory.

[jaj22]

I'd just pull the isNils personally. If HR_GRG_Users is nil at that point then the rest of the code isn't going to work either. Having the isNil in there makes it look like it's a valid possibility.

[jaj22]

Would rather it didn't have the isNil statements but it'll work.

[Tiny-DM]

You guys are too picky :P That's my excuse for not writing it properly the first time. Regardless, the isNil's have been pulled for clarity.

[rautamiekka]

I'd just pull the isNils personally. If HR_GRG_Users is nil at that point then the rest of the code isn't going to work either. Having the isNil in there makes it look like it's a valid possibility.

Good point.