[emmet] The command update tag works incorrectly with single-line tag

[mrmlnc]

VS Code version: 1.3.0-insider
VS Code last commit: de66522
OS version: Windows 10 (build 1511)

Steps to Reproduce:

1. Open VS Code
2. Write custom HTML (for example: .test-wrapper>.test)
3. Run command Emmet: update tag

Problem (tag without text)

No problem (tag with text)

[mrmlnc]

Can be solved by passing -1 when calling code snippets. I don't know why it works 😄

                                                            \/ overwriteAfter: number
snippets.getSnippetController(this.editor).run(codeSnippet, -1, 0, false);