overloaded operator delete should call ei_conditinal_aligned_free, not

ei_aligned_free

Eigen/src/Core/Matrix.h

@@ -25,6 +25,8 @@
 #ifndef EIGEN_MATRIX_H
 #define EIGEN_MATRIX_H
 
+struct ei_select_matrix_constructor_doing_absolutely_nothing {};
+
 /** \class Matrix
   *
   * \brief The matrix class, also used for vectors and row-vectors
@@ -131,6 +133,8 @@ class Matrix
 
   protected:
     ei_matrix_storage<Scalar, MaxSizeAtCompileTime, RowsAtCompileTime, ColsAtCompileTime, Options> m_storage;
+    Matrix(ei_select_matrix_constructor_doing_absolutely_nothing) // this ctor does not even do an assertion
+      : m_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing) {}
 
   public:
     enum { NeedsToAlign = (Options&AutoAlign) == AutoAlign