py/mpprint: Prevent case fall-through when assert is disabled.

dpgeorge · dpgeorge · commit be24e6a53faf · 2020-11-29T17:31:24.000+11:00
Signed-off-by: Damien George &lt;damien@micropython.org&gt;
diff --git a/py/mpprint.c b/py/mpprint.c
@@ -557,11 +557,9 @@ int mp_vprintf(const mp_print_t *print, const char *fmt, va_list args) {
             case 'l': {
                 unsigned long long int arg_value = va_arg(args, unsigned long long int);
                 ++fmt;
-                if (*fmt == 'u' || *fmt == 'd') {
-                    chrs += mp_print_int(print, arg_value, *fmt == 'd', 10, 'a', flags, fill, width);
-                    break;
-                }
-                assert(!"unsupported fmt char");
+                assert(*fmt == 'u' || *fmt == 'd' || !"unsupported fmt char");
+                chrs += mp_print_int(print, arg_value, *fmt == 'd', 10, 'a', flags, fill, width);
+                break;
             }
             #endif
             default:
