cmount: set the correct values for uid, gid under Windows

cmd/cmount/mount.go

@@ -39,8 +39,8 @@ var (
 	writebackCache                   = false
 	maxReadAhead       fs.SizeSuffix = 128 * 1024
 	umask                            = 0
-	uid                              = uint32(0) // set in mount_unix.go
-	gid                              = uint32(0)
+	uid                              = ^uint32(0) // these values instruct WinFSP-FUSE to use the current user
+	gid                              = ^uint32(0) // overriden for non windows in mount_unix.go
 	// foreground                 = false
 	// default permissions for directories - modified by umask in Mount
 	dirPerms  = os.FileMode(0777)