updated for version 7.4.153
Problem: Compiler warning for pointer type.
Solution: Add type cast.
diff --git a/src/if_python.c b/src/if_python.c
index 92510b3..02dc8ed 100644
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -343,7 +343,7 @@
static PyInt(*dll_PyTuple_Size)(PyObject *);
static PyObject*(*dll_PyTuple_GetItem)(PyObject *, PyInt);
static PyTypeObject* dll_PyTuple_Type;
-static int (*dll_PySlice_GetIndicesEx)(PyObject *r, PyInt length,
+static int (*dll_PySlice_GetIndicesEx)(PySliceObject *r, PyInt length,
PyInt *start, PyInt *stop, PyInt *step,
PyInt *slicelen);
static PyObject*(*dll_PyImport_ImportModule)(const char *);