no-switch-case-fall-through does not handle braces correctly

[sschoeb]

Bug Report

• TSLint version: 4.3.1
• TypeScript version: 2.2.1
• Running TSLint via: cli

TypeScript code being linted

  public testfunc(): string {
    let test = 'bla';
    switch (test) {
      case 'bla': {
        return 'Hallo in case';
      }
      case 'blub':
        return 'Hello blub';
    }

    return 'Hallo outside';
  }

with tslint.json configuration:

    "no-switch-case-fall-through": true,

Actual behavior

I got an error that there is a break statement expected before the case
src/app/shared/demo.ts[25, 7]: expected a 'break' before 'case'

It works without the braces around case 'bla'

Expected behavior

Working with braces.

[ajafff]

This is fixed by #2218 and released with tslint v4.5.0