endl for errors

Former-commit-id: 0c2dd060b02e66a802c97099ed1b6f1d82232841

include/igl/viewer/ViewerData.cpp

@@ -118,7 +118,7 @@ IGL_INLINE void igl::viewer::ViewerData::set_mesh(const Eigen::MatrixXd& _V, con
       F = _F;
     }
     else
-      cerr << "ERROR (set_mesh): The new mesh has a different number of vertices/faces. Please clear the mesh before plotting.";
+      cerr << "ERROR (set_mesh): The new mesh has a different number of vertices/faces. Please clear the mesh before plotting."<<endl;
   }
   dirty |= DIRTY_FACE | DIRTY_POSITION;
 }
@@ -144,7 +144,7 @@ IGL_INLINE void igl::viewer::ViewerData::set_normals(const Eigen::MatrixXd& N)
     F_normals = N;
   }
   else
-    cerr << "ERROR (set_normals): Please provide a normal per face, per corner or per vertex.";
+    cerr << "ERROR (set_normals): Please provide a normal per face, per corner or per vertex."<<endl;
   dirty |= DIRTY_NORMAL;
 }
 
@@ -195,7 +195,7 @@ IGL_INLINE void igl::viewer::ViewerData::set_colors(const Eigen::MatrixXd &C)
     F_material_specular = specular(F_material_diffuse);
   }
   else
-    cerr << "ERROR (set_colors): Please provide a single color, or a color per face or per vertex.";
+    cerr << "ERROR (set_colors): Please provide a single color, or a color per face or per vertex."<<endl;;
   dirty |= DIRTY_DIFFUSE;
 
 }
@@ -209,7 +209,7 @@ IGL_INLINE void igl::viewer::ViewerData::set_uv(const Eigen::MatrixXd& UV)
     V_uv = UV;
   }
   else
-    cerr << "ERROR (set_UV): Please provide uv per vertex.";
+    cerr << "ERROR (set_UV): Please provide uv per vertex."<<endl;;
   dirty |= DIRTY_UV;
 }