Fix _Py_normalize_encoding() command
It's not exactly the same than encodings.normalize_encoding(): the C function
also converts to lowercase.
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 91be603..99069cd 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -3100,9 +3100,9 @@
return v;
}
-/* Normalize an encoding name: C implementation of
- encodings.normalize_encoding(). Return 1 on success, or 0 on error (encoding
- is longer than lower_len-1). */
+/* Normalize an encoding name: similar to encodings.normalize_encoding(), but
+ also convert to lowercase. Return 1 on success, or 0 on error (encoding is
+ longer than lower_len-1). */
int
_Py_normalize_encoding(const char *encoding,
char *lower,