reachableroots: return NULL if we're throwing an exception
Based on my reading of [0] and surrounding sections, if we want an
exception to be properly raised when something goes wrong in the C
code, we need to make sure we return NULL here. Do so.
https://docs.python.org/2/extending/extending.html#back-to-the-example
--- a/mercurial/parsers.c Tue Aug 11 15:34:10 2015 -0400
+++ b/mercurial/parsers.c Tue Aug 11 14:53:47 2015 -0400
@@ -1232,9 +1232,7 @@
release_reachable:
Py_XDECREF(reachable);
bail:
- val = Py_None;
- Py_INCREF(Py_None);
- return val;
+ return NULL;
}
static PyObject *compute_phases_map_sets(indexObject *self, PyObject *args)