Syntax highlighting doesn't change when commenting out class inheritence part (part starting from colon[:])

[3rdey3]

• VSCode Version: Code 1.9.1 (f9d0c68, 2017-02-09T00:26:45.394Z)
• OS Version: Windows_NT ia32 10.0.14393
• Extensions:

Extension	Author	Version
csharp	ms-vscode	1.7.0
PowerShell	ms-vscode	0.9.0
vim	vscodevim	0.5.3

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Steps to Reproduce:

1. declare a class with inheritance. i.e. public class CustomBootstrapper : DefaultNancyBootstrapper
2. try to comment out everything after : with // or /* */

[aeschli]

This issue was moved to dotnet/vscode-csharp#1243