fix bad typos, thanks to Kenneth Riddile

Eigen/src/Geometry/Hyperplane.h

diff --git a/Eigen/src/Geometry/Hyperplane.h b/Eigen/src/Geometry/Hyperplane.h
index 5171f9a..98611d1 100644
--- a/Eigen/src/Geometry/Hyperplane.h
+++ b/Eigen/src/Geometry/Hyperplane.h
@@ -70,7 +70,7 @@
   /** Construct a plane from its normal \a n and a point \a e onto the plane.
     * \warning the vector normal is assumed to be normalized.
     */
-  inline Hyperplane(const VectorType& n, const VectorType e)
+  inline Hyperplane(const VectorType& n, const VectorType& e)
     : m_coeffs(n.size()+1)
   {
     normal() = n;

Eigen/src/Sparse/SparseMatrix.h

diff --git a/Eigen/src/Sparse/SparseMatrix.h b/Eigen/src/Sparse/SparseMatrix.h
index 8abe96e..d58d910 100644
--- a/Eigen/src/Sparse/SparseMatrix.h
+++ b/Eigen/src/Sparse/SparseMatrix.h
@@ -336,14 +336,14 @@
     {
       EIGEN_DBG_SPARSE(
         s << "Nonzero entries:\n";
-        for (uint i=0; i<m.nonZeros(); ++i)
+        for (unsigned int i=0; i<m.nonZeros(); ++i)
         {
           s << "(" << m.m_data.value(i) << "," << m.m_data.index(i) << ") ";
         }
         s << std::endl;
         s << std::endl;
         s << "Column pointers:\n";
-        for (uint i=0; i<m.cols(); ++i)
+        for (unsigned int i=0; i<m.cols(); ++i)
         {
           s << m.m_outerIndex[i] << " ";
         }