New() initializer panics if the given size is uintptr(0)

[chiho20]

I wanted to initialize a haxmap B with the same size as haxmap A with the following code:

B := haxmap.New[string, struct{}](A.Len())

which worked for most cases except when A.Len() is 0. When A has 0 key-values, the initializer would panic.

Would be awesome if this is handled 🙏

[alphadose]

@chiho20 got it, will make the changes and release new minor version soon 👍

[semihbkgr]

I've created a PR that references this issue: #44