Fixed uninitialised members in Context object

include/internal/catch_context_impl.hpp

@@ -17,7 +17,7 @@ namespace Catch {
 
     class Context : public IMutableContext {
 
-        Context() : m_config( NULL ) {}
+        Context() : m_config( NULL ), m_runner( NULL ), m_resultCapture( NULL ) {}
         Context( Context const& );
         void operator=( Context const& );
 
@@ -77,9 +77,9 @@ namespace Catch {
         }
 
     private:
+        Ptr<IConfig const> m_config;
         IRunner* m_runner;
         IResultCapture* m_resultCapture;
-        Ptr<IConfig const> m_config;
         std::map<std::string, IGeneratorsForTest*> m_generatorsByTestName;
     };