bpo-37695: Correct unget_wch error message. (GH-14986)

(cherry picked from commit c9345e382c630ddcc2b148b30954640e0e435c8a)

Co-authored-by: Anthony Sottile <asottile@umich.edu>
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 2435e1c..8fca7fc 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -4176,7 +4176,7 @@
         wchar_t buffer[2];
         if (PyUnicode_AsWideChar(obj, buffer, 2) != 1) {
             PyErr_Format(PyExc_TypeError,
-                         "expect bytes or str of length 1, or int, "
+                         "expect str of length 1 or int, "
                          "got a str of length %zi",
                          PyUnicode_GET_LENGTH(obj));
             return 0;
@@ -4203,7 +4203,7 @@
     }
     else {
         PyErr_Format(PyExc_TypeError,
-                     "expect bytes or str of length 1, or int, got %s",
+                     "expect str of length 1 or int, got %s",
                      Py_TYPE(obj)->tp_name);
         return 0;
     }