Change matrix initialization in order to support older versions of Ei…

…gen.

Signed-off-by: Joan Aguilar Mayans <[email protected]>

dartsim/src/SDFFeatures_TEST.cc

@@ -942,14 +942,14 @@ TEST_P(SDFFeatures_TEST, AddedMass)
   // Expected spatial inertia matrix. This includes inertia due to the body's
   // mass and added mass. Note that the ordering of the matrix is different
   // than the one used in SDF.
-  const Eigen::Matrix6d expectedSpatialInertia {
-    {17, 17, 18, 4, 9, 13},
-    {17, 20, 20, 5, 10, 14},
-    {18, 20, 22, 6, 11, 15},
-    {4, 5, 6, 2, 2, 3},
-    {9, 10, 11, 2, 8, 8},
-    {13, 14, 15, 3, 8, 13}
-  };
+  Eigen::Matrix6d expectedSpatialInertia;
+  expectedSpatialInertia <<
+    17, 17, 18, 4, 9, 13,
+    17, 20, 20, 5, 10, 14,
+    18, 20, 22, 6, 11, 15,
+    4, 5, 6, 2, 2, 3,
+    9, 10, 11, 2, 8, 8,
+    13, 14, 15, 3, 8, 13;
 
   auto world = this->LoadWorld(TEST_WORLD_DIR"/added_mass.sdf");
   ASSERT_NE(nullptr, world);