fusefrontend_reverse: Fix redeclaration of 'entries' variable.
fusefrontend_reverse: Fix redeclaration of 'entries' variable.

Go version go1.10.7 linux/amd64 complains with:

 internal/fusefrontend_reverse/rfs.go:333: declaration of "entries" shadows
 declaration at internal/fusefrontend_reverse/rfs.go:327

rfjakob/gocryptfs,rfjakob/gocryptfs,rfjakob/gocryptfs,rfjakob/gocryptfs