Just track whether last assertion passed directly, rather than deduce it from counts

include/internal/catch_run_context.h

@@ -164,7 +164,7 @@ namespace Catch {
         std::vector<SectionEndInfo> m_unfinishedSections;
         std::vector<ITracker*> m_activeSections;
         TrackerContext m_trackerContext;
-        std::size_t m_prevPassed = 0;
+        bool m_lastAssertionPassed = false;
         bool m_shouldReportUnexpected = true;
         bool m_includeSuccessfulResults;
     };