Fix part of SF bug # 544248 gcc warning in unicodeobject.c
When --enable-unicode=ucs4, need to cast Py_UNICODE to a char
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index dde6b47..7f4c312 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -6464,7 +6464,7 @@
PyErr_Format(PyExc_ValueError,
"unsupported format character '%c' (0x%x) "
"at index %i",
- (31<=c && c<=126) ? c : '?',
+ (31<=c && c<=126) ? (char)c : '?',
c,
(int)(fmt -1 - PyUnicode_AS_UNICODE(uformat)));
goto onError;