Adding semicolon after @inject statement results in IIS crashing and failed codegen.

[NTaylorMullen]

Repro:

1. Create a View.
2. Add @inject IUrlHelper foo
3. Start app in debug mode (f5)
4. Add semicolon to end of @inject IUrlHelper foo => @inject IUrlHelper foo;, hit save.

Result: IIS terminates.

Expected Result: compilation error or ignore ';'.

*Note: * You can also see the impact of adding a semicolon to the end of the @inject when in the editor by the tons of error messages that appear due to the semicolon (essentially because code fails to generate).

/cc @ToddGrun

[NTaylorMullen]

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