Fix C99-ism, and add XXX to comment
diff --git a/Python/getargs.c b/Python/getargs.c
index 4f4164e..8ee7d2f 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -849,7 +849,7 @@
 						  arg, msgbuf, bufsize);
 			if (*format == '#') {
 				FETCH_SIZE;
-				assert(0); // redundant with if-case
+				assert(0); /* XXX redundant with if-case */
 				if (arg == Py_None)
 					*q = 0;
 				else