[PATCH] perf python: Fix redundant self-assignment in get_argument_count()

[liujing]

From: Liu Jing <liujing@xxxxxxxxxxxxxxxxxxxx>

In get_argument_count(), the variable code_obj is assigned to itself
before being assigned the result of PyObject_GetAttrString(). This is
a redundant self-assignment that appears to be a typo.

Fix it by removing the redundant self-assignment.

Signed-off-by: Liu Jing <liujing@xxxxxxxxxxxxxxxxxxxx>
---
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -165,7 +165,7 @@
 {
 	int arg_count = 0;
 
-	PyObject *code_obj = code_obj = PyObject_GetAttrString(handler, "__code__");
+	PyObject *code_obj = PyObject_GetAttrString(handler, "__code__");
 	PyErr_Clear();
 	if (code_obj) {
 		PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,