Issue #13722: Avoid silencing ImportErrors when initializing the codecs registry.

Misc/NEWS

@@ -103,6 +103,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
+  registry.
+
 - Issue #13781: Fix GzipFile bug that caused an exception to be raised when
   opening for writing using a fileobj returned by os.fdopen().
 

Python/codecs.c

@@ -1067,15 +1067,6 @@ static int _PyCodecRegistry_Init(void)
 
     mod = PyImport_ImportModuleNoBlock("encodings");
     if (mod == NULL) {
-        if (PyErr_ExceptionMatches(PyExc_ImportError)) {
-            /* Ignore ImportErrors... this is done so that
-               distributions can disable the encodings package. Note
-               that other errors are not masked, e.g. SystemErrors
-               raised to inform the user of an error in the Python
-               configuration are still reported back to the user. */
-            PyErr_Clear();
-            return 0;
-        }
         return -1;
     }
     Py_DECREF(mod);