Fix VSTHRD010 transitivity to not mis-fire when invoking async methods #227
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Prior to this change VSTHRD010 would transitively mark all methods that called a method that showed a UI thread requirement, including when leaf methods were async and used
SwitchToMainThreadAsync
. This would then make their async caller have to callThrowIfNotOnUIThread()
which of course is silly since their caller doesn't need to know the threading affinity of the async methods they invoke.With this change, instead of marking all callers of all UI thread requiring methods, we only mark callers of methods that throw if not invoked on the right thread.
Fixes #226