Fixed warnings in unit tests due to unused variables

src/Unittests/unittests_trimesh_circulator_vertex_edge.cc

@@ -303,7 +303,7 @@ TEST_F(OpenMeshTrimeshCirculatorVertexEdge, CWAndCCWCheck) {
   face_vhandles.push_back(vhandle[0]);
   face_vhandles.push_back(vhandle[1]);
   face_vhandles.push_back(vhandle[2]);
-  Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
+  mesh_.add_face(face_vhandles);
 
   face_vhandles.clear();
 

src/Unittests/unittests_trimesh_circulator_vertex_face.cc

@@ -475,7 +475,8 @@ TEST_F(OpenMeshTrimeshCirculatorVertexFace, CWAndCCWCheck) {
   face_vhandles.push_back(vhandle[0]);
   face_vhandles.push_back(vhandle[1]);
   face_vhandles.push_back(vhandle[2]);
-  Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
+  
+  mesh_.add_face(face_vhandles);
 
   face_vhandles.clear();
 

src/Unittests/unittests_trimesh_circulator_vertex_ihalfedge.cc

@@ -417,7 +417,7 @@ TEST_F(OpenMeshTrimeshCirculatorVertexIHalfEdge, CWAndCCWCheck) {
   face_vhandles.push_back(vhandle[0]);
   face_vhandles.push_back(vhandle[1]);
   face_vhandles.push_back(vhandle[2]);
-  Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
+  mesh_.add_face(face_vhandles);
 
   face_vhandles.clear();
 

src/Unittests/unittests_trimesh_circulator_vertex_ohalfedge.cc

@@ -417,7 +417,7 @@ TEST_F(OpenMeshTrimeshCirculatorVertexOHalfEdge, CWAndCCWCheck) {
   face_vhandles.push_back(vhandle[0]);
   face_vhandles.push_back(vhandle[1]);
   face_vhandles.push_back(vhandle[2]);
-  Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
+  mesh_.add_face(face_vhandles);
 
   face_vhandles.clear();
 

src/Unittests/unittests_trimesh_circulator_vertex_vertex.cc

@@ -306,7 +306,7 @@ TEST_F(OpenMeshTrimeshCirculatorVertexVertex, CWAndCCWCheck) {
   face_vhandles.push_back(vhandle[0]);
   face_vhandles.push_back(vhandle[1]);
   face_vhandles.push_back(vhandle[2]);
-  Mesh::FaceHandle fh0 = mesh_.add_face(face_vhandles);
+  mesh_.add_face(face_vhandles);
 
   face_vhandles.clear();