Do not pass 0 to PyObject_IsTrue

src/Mod/Mesh/App/MeshPyImp.cpp

@@ -127,9 +127,9 @@ PyObject* MeshPy::copy(PyObject *args)
 {
     if (!PyArg_ParseTuple(args, ""))
         return NULL;
-
+
     const MeshCore::MeshKernel& kernel = getMeshObjectPtr()->getKernel();
-    return new MeshPy(new MeshObject(kernel));
+    return new MeshPy(new MeshObject(kernel));
 }
 
 PyObject*  MeshPy::read(PyObject *args)
@@ -238,7 +238,7 @@ PyObject*  MeshPy::offsetSpecial(PyObject *args)
 PyObject*  MeshPy::crossSections(PyObject *args)
 {
     PyObject *obj;
-    PyObject *poly=0;
+    PyObject *poly=Py_False;
     float min_eps = 1.0e-2f;
     if (!PyArg_ParseTuple(args, "O!|fO!", &PyList_Type, &obj, &min_eps, &PyBool_Type, &poly))
         return 0;

src/Mod/Part/App/AppPartPy.cpp

@@ -1147,8 +1147,8 @@ static PyObject * makeLoft(PyObject *self, PyObject *args)
     return new BSplineSurfacePy(new GeomBSplineSurface(aRes));
 #else
     PyObject *pcObj;
-    PyObject *psolid=0;
-    PyObject *pruled=0;
+    PyObject *psolid=Py_False;
+    PyObject *pruled=Py_False;
     if (!PyArg_ParseTuple(args, "O!|O!O!", &(PyList_Type), &pcObj,
                                            &(PyBool_Type), &psolid,
                                            &(PyBool_Type), &pruled))

src/Mod/Part/App/BRepOffsetAPI_MakePipeShellPyImp.cpp

@@ -127,7 +127,7 @@ PyObject* BRepOffsetAPI_MakePipeShellPy::setAuxiliarySpine(PyObject *args)
 
 PyObject* BRepOffsetAPI_MakePipeShellPy::add(PyObject *args)
 {
-    PyObject *prof, *curv=0, *keep=0;
+    PyObject *prof, *curv=Py_False, *keep=Py_False;
     if (!PyArg_ParseTuple(args, "O!|O!O!",&Part::TopoShapePy::Type,&prof
                                          ,&PyBool_Type,&curv
                                          ,&PyBool_Type,&keep))

src/Mod/Part/App/RectangularTrimmedSurfacePyImp.cpp

@@ -66,7 +66,7 @@ int RectangularTrimmedSurfacePy::PyInit(PyObject* args, PyObject* /*kwd*/)
 
     PyErr_Clear();
     double param1,param2;
-    PyObject *utrim=0, *sense=Py_True;
+    PyObject *utrim=Py_False, *sense=Py_True;
     if (PyArg_ParseTuple(args, "O!ddO!|O!",&(Part::GeometrySurfacePy::Type),&surf,
                          &param1,&param2,&PyBool_Type,&utrim,&PyBool_Type,&sense)) {
         Standard_Boolean UTrim = PyObject_IsTrue(utrim);