Fixes #1766: Catch terminates when parsing invalid test name

include/internal/catch_test_spec.cpp

@@ -91,5 +91,9 @@ namespace Catch {
         } );
         return matches;
     }
+    
+    const TestSpec::vectorStrings& TestSpec::getInvalidArgs() const{
+        return  (m_invalidArgs);
+    }
 
 }