Silence expression result unused warnings with clang.
The PyObject_INIT() macros returns obj:

../cpython/Objects/methodobject.c:32:23: warning: expression result unused [-Wunused-value]
        PyObject_INIT(op, &PyCFunction_Type);
                      ^~
../cpython/Include/objimpl.h:139:69: note: expanded from macro 'PyObject_INIT'
    ( Py_TYPE(op) = (typeobj), _Py_NewReference((PyObject *)(op)), (op) )
                                                                    ^
1 warning generated.
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 8217b1e..63c67f8 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -107,7 +107,7 @@
     op = (PyBytesObject *)PyObject_MALLOC(PyBytesObject_SIZE + size);
     if (op == NULL)
         return PyErr_NoMemory();
-    PyObject_INIT_VAR(op, &PyBytes_Type, size);
+    (void)PyObject_INIT_VAR(op, &PyBytes_Type, size);
     op->ob_shash = -1;
     if (str != NULL)
         Py_MEMCPY(op->ob_sval, str, size);
@@ -155,7 +155,7 @@
     op = (PyBytesObject *)PyObject_MALLOC(PyBytesObject_SIZE + size);
     if (op == NULL)
         return PyErr_NoMemory();
-    PyObject_INIT_VAR(op, &PyBytes_Type, size);
+    (void)PyObject_INIT_VAR(op, &PyBytes_Type, size);
     op->ob_shash = -1;
     Py_MEMCPY(op->ob_sval, str, size+1);
     /* share short strings */
@@ -749,7 +749,7 @@
     op = (PyBytesObject *)PyObject_MALLOC(PyBytesObject_SIZE + nbytes);
     if (op == NULL)
         return PyErr_NoMemory();
-    PyObject_INIT_VAR(op, &PyBytes_Type, size);
+    (void)PyObject_INIT_VAR(op, &PyBytes_Type, size);
     op->ob_shash = -1;
     op->ob_sval[size] = '\0';
     if (Py_SIZE(a) == 1 && n > 0) {
diff --git a/Objects/classobject.c b/Objects/classobject.c
index 272f575..0c0bd47 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -52,7 +52,7 @@
     im = free_list;
     if (im != NULL) {
         free_list = (PyMethodObject *)(im->im_self);
-        PyObject_INIT(im, &PyMethod_Type);
+        (void)PyObject_INIT(im, &PyMethod_Type);
         numfree--;
     }
     else {
diff --git a/Objects/complexobject.c b/Objects/complexobject.c
index 60a388f..a5b76f0 100644
--- a/Objects/complexobject.c
+++ b/Objects/complexobject.c
@@ -217,7 +217,7 @@
     op = (PyComplexObject *) PyObject_MALLOC(sizeof(PyComplexObject));
     if (op == NULL)
         return PyErr_NoMemory();
-    PyObject_INIT(op, &PyComplex_Type);
+    (void)PyObject_INIT(op, &PyComplex_Type);
     op->cval = cval;
     return (PyObject *) op;
 }
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 29c3b32..05b7679 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -119,7 +119,7 @@
             return PyErr_NoMemory();
     }
     /* Inline PyObject_New */
-    PyObject_INIT(op, &PyFloat_Type);
+    (void)PyObject_INIT(op, &PyFloat_Type);
     op->ob_fval = fval;
     return (PyObject *) op;
 }
diff --git a/Objects/longobject.c b/Objects/longobject.c
index a5c0d1b..68a667e 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -5089,7 +5089,7 @@
             assert(v->ob_digit[0] == abs(ival));
         }
         else {
-            PyObject_INIT(v, &PyLong_Type);
+            (void)PyObject_INIT(v, &PyLong_Type);
         }
         Py_SIZE(v) = size;
         v->ob_digit[0] = abs(ival);
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index 55a7d6a..6179aee 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -29,7 +29,7 @@
     op = free_list;
     if (op != NULL) {
         free_list = (PyCFunctionObject *)(op->m_self);
-        PyObject_INIT(op, &PyCFunction_Type);
+        (void)PyObject_INIT(op, &PyCFunction_Type);
         numfree--;
     }
     else {
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 8b2ea1c..530670f 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -787,7 +787,7 @@
         Py_INCREF(type);
 
     if (type->tp_itemsize == 0)
-        PyObject_INIT(obj, type);
+        (void)PyObject_INIT(obj, type);
     else
         (void) PyObject_INIT_VAR((PyVarObject *)obj, type, nitems);