--dry-run generate creates empty folder when used with subfolder `Eq: subfolder/component-name`

[leocaseiro]

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request

Versions.

$ ng --version
    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/
@angular/cli: 1.0.0
node: 7.5.0
os: darwin x64
@angular/animations: 4.0.2
@angular/common: 4.0.2
@angular/compiler: 4.0.2
@angular/core: 4.0.2
@angular/flex-layout: 2.0.0-rc.1
@angular/forms: 4.0.2
@angular/http: 4.0.2
@angular/material: 2.0.0-beta.3
@angular/platform-browser: 4.0.2
@angular/platform-browser-dynamic: 4.0.2
@angular/router: 4.0.2
@angular/cli: 1.0.0
@angular/compiler-cli: 4.0.2
@angular/language-service: 4.0.2

Repro steps.

ng g c subfolder/my-component -d

The log given by the failure.

Desired functionality.

It should not create the subfolder directory

Mention any other details that might be useful.

found the #4500 but I don't think is the same issue.

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