Address some of the Resharper finds for Catch 1

Closes #957 as the other findings are mostly noise that is pointless
to fix in a branch that will be soon EoLd.

include/internal/catch_assertionresult.hpp

@@ -13,6 +13,8 @@
 namespace Catch {
 
 
+    AssertionInfo::AssertionInfo():macroName(""), capturedExpression(""), resultDisposition(ResultDisposition::Flags::Normal), secondArg(""){}
+
     AssertionInfo::AssertionInfo(   char const * _macroName,
                                     SourceLineInfo const& _lineInfo,
                                     char const * _capturedExpression,