tests/qtest: Fix two format strings

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20221105115525.623059-1-sw@weilnetz.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
index d2eb107..f574331 100644
--- a/tests/qtest/migration-test.c
+++ b/tests/qtest/migration-test.c
@@ -2188,7 +2188,7 @@
     qobject_unref(qmp_command(who,
                   "{ 'execute': 'calc-dirty-rate',"
                   "'arguments': { "
-                  "'calc-time': %ld,"
+                  "'calc-time': %" PRIu64 ","
                   "'mode': 'dirty-ring' }}",
                   calc_time));
 }
@@ -2203,7 +2203,7 @@
     qobject_unref(qmp_command(who,
                   "{ 'execute': 'set-vcpu-dirty-limit',"
                   "'arguments': { "
-                  "'dirty-rate': %ld } }",
+                  "'dirty-rate': %" PRIu64 " } }",
                   dirtyrate));
 }