[3.8] bpo-40417: Fix deprecation warning in PyImport_ReloadModule (GH-19750) (GH-19934)



Automerge-Triggered-By: @brettcannon.
(cherry picked from commit f40bd466bf14029e2687e36e965875adf9d4be1a)

Co-authored-by: Robert Rouhani <robert.rouhani@gmail.com>
diff --git a/Python/import.c b/Python/import.c
index b4074d1..b73fe2f 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1908,23 +1908,23 @@
 PyObject *
 PyImport_ReloadModule(PyObject *m)
 {
-    _Py_IDENTIFIER(imp);
+    _Py_IDENTIFIER(importlib);
     _Py_IDENTIFIER(reload);
     PyObject *reloaded_module = NULL;
-    PyObject *imp = _PyImport_GetModuleId(&PyId_imp);
-    if (imp == NULL) {
+    PyObject *importlib = _PyImport_GetModuleId(&PyId_importlib);
+    if (importlib == NULL) {
         if (PyErr_Occurred()) {
             return NULL;
         }
 
-        imp = PyImport_ImportModule("imp");
-        if (imp == NULL) {
+        importlib = PyImport_ImportModule("importlib");
+        if (importlib == NULL) {
             return NULL;
         }
     }
 
-    reloaded_module = _PyObject_CallMethodIdObjArgs(imp, &PyId_reload, m, NULL);
-    Py_DECREF(imp);
+    reloaded_module = _PyObject_CallMethodIdObjArgs(importlib, &PyId_reload, m, NULL);
+    Py_DECREF(importlib);
     return reloaded_module;
 }