replace PyString_Check usages with PyUnicode_Check

Signed-off-by: oleg.hoefling <oleg.hoefling@gmail.com>

Author: hoefling

src/platform.h

@@ -37,7 +37,6 @@ typedef int Py_ssize_t;
 
 #if PY_MAJOR_VERSION >= 3
 #define PY3K 1
-#define PyString_Check PyUnicode_Check
 #define PyString_FromStringAndSize PyUnicode_FromStringAndSize
 
 #define PyString_AsString PyUnicode_AsUTF8
@@ -48,7 +47,6 @@ typedef int Py_ssize_t;
 #define PyString_FSConverter PyUnicode_FSConverter
 #else // PY3K
 
-#define PyBytes_Check PyString_Check
 #define PyBytes_FromStringAndSize PyString_FromStringAndSize
 
 #define PyBytes_AsString PyString_AsString

src/template.c

@@ -769,7 +769,7 @@ static PyObject* PyXmlSec_TemplateTransformAddC14NInclNamespaces(PyObject* self,
         sep = PyUnicode_FromString(" ");
         prefixes = PyObject_CallMethod(sep, "join", "O", prefixes);
         Py_DECREF(sep);
-    } else if (PyString_Check(prefixes)) {
+    } else if (PyUnicode_Check(prefixes)) {
         Py_INCREF(prefixes);
     } else {
         PyErr_SetString(PyExc_TypeError, "expected instance of str or list of str");