GOOS file suffix ignored for compilation

[mreynolds]

This seems related to #1848.

For reference : https://blog.ralch.com/tutorial/golang-conditional-compilation/

Steps to Reproduce:

1. Create a file mymodule.go
2. Create a GOOS conditional compilation for current platform (say mymodule_linux.go)

package test

var string v = "test"

3. Create a GOOS conditional compilation for a separate platform (say mymodule_darwin.go)

package test

var string v = "test"

VSCode-go treats both files as actively compile-able and, if code is repeated (say a var in the package scope) in both files, VSCode-go lists them as "redeclared" despite only one of them being compile-able on the current platform.

[ramya-rao-a]

Thanks for reporting @mreynolds

The fix for #1848 will resolve this issue to
So, closing this in favor of #1848