shared_vector limit MSVC workaround

limit 207efca15c
to MSVC <= 2010.

src/misc/pv/sharedVector.h

@@ -459,11 +459,11 @@ private:
     /* Hack alert.
      * For reasons of simplicity and efficiency, we want to use raw pointers for iteration.
      * However, shared_ptr::get() isn't defined when !m_sdata, although practically it gives NULL.
-     * Unfortunately, many of the MSVC STL methods assert() that iterators are never NULL.
+     * Unfortunately, many of the MSVC (<= VS 2010) STL methods assert() that iterators are never NULL.
      * So we fudge here by abusing 'this' so that our iterators are always !NULL.
      */
     inline E* base_ptr() const {
-#ifdef _MSC_VER
+#if defined(_MSC_VER) && _MSC_VER<=1600
         return this->m_count ? this->m_sdata.get() : (E*)(this-1);
 #else
         return this->m_sdata.get();