[PATCH v3 4/8] lib: document existing free functions

[Thomas Monjalon]

20/02/2022 19:21, Stephen Hemminger:
> + *   If NULL then, the function does nothing.

I'm not English native, but I thought it should be one of these 2 forms:
	- If NULL, the function does nothing.
	- If NULL then the function does nothing.