Visual studio can't handle {}

Former-commit-id: e0573ec73e02d8d178a1399f039e73128f5ac507

include/igl/biharmonic_coordinates.cpp

@@ -142,7 +142,7 @@ IGL_INLINE bool igl::biharmonic_coordinates(
   // minimize    ½ W' A W'
   // subject to  W(b,:) = J
   return min_quad_with_fixed(
-    A,VectorXd::Zero(A.rows()).eval(),b,J,{},VectorXd(),true,W);
+    A,VectorXd::Zero(A.rows()).eval(),b,J,SparseMatrix<double>(),VectorXd(),true,W);
 }
 
 #ifdef IGL_STATIC_LIBRARY