remove unnecessary mem leak handling in unary and wrap method

Author: prakashsellathurai

Objects/weakrefobject.c

@@ -561,8 +561,7 @@ _proxy_unwrap(PyObject **op, int *did_incref)
     static PyObject * \
     method(PyObject *proxy) { \
         int proxy_incref = 0; \
-        if (!_proxy_unwrap(&proxy, &proxy_incref)) \
-            return NULL; \
+        UNWRAP(proxy); \
         PyObject* res = generic(proxy); \
         Py_DECREF(proxy); \
         return res; \
@@ -616,8 +615,7 @@ _proxy_unwrap(PyObject **op, int *did_incref)
     static PyObject * \
     method(PyObject *proxy, PyObject *Py_UNUSED(ignored)) { \
         int proxy_incref = 0; \
-        if (!_proxy_unwrap(&proxy, &proxy_incref)) \
-            return NULL; \
+        UNWRAP(proxy); \
         PyObject* res = PyObject_CallMethodNoArgs(proxy, &_Py_ID(SPECIAL)); \
         Py_DECREF(proxy); \
         return res; \