vgetargskeywords(): remove test that can't succeed. Not a bugfix, just

removing useless obfuscation.

Python/getargs.c

@@ -1069,12 +1069,9 @@ vgetargskeywords(PyObject *args, PyObject *keywords, char *format,
 	
 	/* do a cursory check of the keywords just to see how many we got */
 
+	kwlen = 0;
 	if (keywords) { 	
 		if (!PyDict_Check(keywords)) {
-			if (keywords == NULL)
-				PyErr_SetString(PyExc_SystemError,
-		     "NULL received when keyword dictionary expected");
-			else
 			PyErr_Format(PyExc_SystemError,
 				"%s received when keyword dictionary expected",
 				keywords->ob_type->tp_name);
@@ -1082,9 +1079,6 @@ vgetargskeywords(PyObject *args, PyObject *keywords, char *format,
 		}	
 		kwlen = PyDict_Size(keywords);
 	}
-	else {
-		kwlen = 0;
-	}
 			
 	/* make sure there are no duplicate values for an argument;
 	   its not clear when to use the term "keyword argument vs.