Merge ssize_t branch.
diff --git a/Modules/shamodule.c b/Modules/shamodule.c
index 058391d..93a9224 100644
--- a/Modules/shamodule.c
+++ b/Modules/shamodule.c
@@ -543,7 +543,7 @@
 static PyObject *
 SHA_new(PyObject *self, PyObject *args, PyObject *kwdict)
 {
-    static char *kwlist[] = {"string", NULL};
+    static const char *kwlist[] = {"string", NULL};
     SHAobject *new;
     unsigned char *cp = NULL;
     int len;