Bug 1074: Support for FTP servers with Windows-like paths (fixed again after broken in 5.8.2 by Bug 1400)

https://winscp.net/tracker/1074

Source commit: a71132f652a2e7164ac5932e0ed4b2cd6236d0ff

source/core/FtpFileSystem.cpp

@@ -2400,7 +2400,7 @@ void __fastcall TFTPFileSystem::ReadCurrentDirectory()
 
         if (Result)
         {
-          if ((Path.Length() > 0) && (Path[1] != L'/'))
+          if ((Path.Length() > 0) && !UnixIsAbsolutePath(Path))
           {
             Path = L"/" + Path;
           }