Fix an apparent typo. This test of the readonly boolean should have been != 0
rather than >= 0. This change means the PyBUF_LOCK flag to the buffer api
works on immutable bytes objects as one would expect.
diff --git a/Objects/abstract.c b/Objects/abstract.c
index 655a52a..c0298a8 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -673,7 +673,7 @@
{
if (view == NULL) return 0;
if (((flags & PyBUF_LOCK) == PyBUF_LOCK) &&
- readonly >= 0) {
+ readonly != 0) {
PyErr_SetString(PyExc_BufferError,
"Cannot lock this object.");
return -1;