chore(PythonQt): replace PyInt_Check with PyLong_Check

No functional change intended.

Author: jcfr

src/PythonQt.cpp

@@ -1655,7 +1655,7 @@ int custom_system_exit_exception_handler()
     /* If we failed to dig out the 'code' attribute,
        just let the else clause below print the error. */
   }
-  if (PyInt_Check(value))
+  if (PyLong_Check(value))
     exitcode = (int)PyInt_AsLong(value);
   else {
     PyObject *sys_stderr = PySys_GetObject(const_cast<char*>("stderr"));

src/PythonQtPythonInclude.h

@@ -126,7 +126,6 @@
 #define PyString_FromFormat PyUnicode_FromFormat
 #define PyString_Check      PyUnicode_Check
 
-#define PyInt_Check    PyLong_Check
 #define PyInt_AsLong   PyLong_AsLong
 
 #else