all: replace empty slice literal with var (#8990)

refactor: replace empty slice literal with `var`

An empty slice can be represented by `nil` or an empty slice literal. They are
functionally equivalent — their `len` and `cap` are both zero — but the `nil`
slice is the preferred style. For more information about empty slices,
see [Declaring Empty Slices](https://github.com/golang/go/wiki/CodeReviewComments#declaring-empty-slices).

Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>

lib/osutil/net.go

@@ -15,7 +15,8 @@ func GetLans() ([]*net.IPNet, error) {
 	if err != nil {
 		return nil, err
 	}
-	addrs := []net.Addr{}
+	var addrs []net.Addr
+
 	for _, currentIf := range ifs {
 		if currentIf.Flags&net.FlagUp != net.FlagUp {
 			continue