stylecop fix followup, enforce SA1503

[tg123]

enforced

The opening and closing braces for a C# statement have been omitted.

https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1503.md

if (something) doSomething();

will not longer pass compiling.

eliminated but still remain warning in future

The last statement in a multi-line C# initializer or list is missing a trailing comma.

• https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1413.md

A closing brace within a C# element is not spaced correctly.

• https://github.com/DotNetAnalyzers/StyleCopAnalyzers/blob/master/documentation/SA1013.md

[brendandburns]

/lgtm
/approve

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