Disable C4702 in Exception tests self tests

VS 2015 in Release mode sees through our indirection and complains.
There is no reason to make the indirectoin harder to reason about,
instead of just disabling the warning.

projects/SelfTest/ExceptionTests.cpp

@@ -11,6 +11,10 @@
 #include <string>
 #include <stdexcept>
 
+#ifdef _MSC_VER
+#pragma warning(disable:4702) // Unreachable code -- MSVC 19 (VS 2015) sees right through the indirection
+#endif
+
 namespace
 {
     inline int thisThrows()