Fix Windows-Path Bug

[fl3pp]

Unfortunately, vim.fn.globpath cannot handle directory paths with trailing backslashes (even though it returns them with one). Example:

--[[ Structure
    c:\temp\reprod
    | dir1
    |  | snippets
    |  |  | lua.snippets
    | dir2
    |  | snippets
    |  |  | lua.snippets --]]

snip_dirs = vim.fn.globpath('c:\\temp\\reprod\\dir1,c:\\temp\\reprod\\dir2', 'snippets/', 0, 1)
-- { "c:\\temp\\reprod\\dir1\\snippets\\", "c:\\temp\\reprod\\dir2\\snippets\\" }

dirs = table.concat(dirs, ',')
-- "c:\\temp\\reprod\\dir1\\snippets\\,c:\\temp\\reprod\\dir2\\snippets\\"

snip_files = vim.fn.globpath("c:\\temp\\reprod\\dir1\\snippets\\,c:\\temp\\reprod\\dir2\\snippets\\","*.snippets",0,1)
-- BUG: { }

snip_files = vim.fn.globpath("c:\\temp\\reprod\\dir1\\snippets,c:\\temp\\reprod\\dir2\\snippets","*.snippets",0,1)
-- works: { "c:\\temp\\reprod\\dir1\\snippets\\lua.snippets", "c:\\temp\\reprod\\dir2\\snippets\\lua.snippets" }

[dcampos]

Thanks for your contribution!

[fl3pp]

Thanks for the fast merge!