Undo usage of PyOS_snprintf (rev. 1.51 of PyXML).
diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index e1dbf2f..9cf3935 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -113,7 +113,9 @@
int column = XML_GetErrorColumnNumber(parser);
enum XML_Error code = XML_GetErrorCode(parser);
- PyOS_snprintf(buffer, sizeof(buffer), "%.200s: line %i, column %i",
+ /* There is no risk of overflowing this buffer, since
+ even for 64-bit integers, there is sufficient space. */
+ sprintf(buffer, "%.200s: line %i, column %i",
XML_ErrorString(code), lineno, column);
err = PyObject_CallFunction(ErrorObject, "s", buffer);
if ( err != NULL