qemu-timer: reuse MIN macro in qemu_timeout_ns_to_ms

Signed-off-by: NFrediano Ziglio <fziglio@redhat.com>
Reviewed-by: NLaurent Vivier <laurent@vivier.eu>
Message-Id: <20191023122652.2999-3-fziglio@redhat.com>
[lv: removed the two useless casts]
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

util/qemu-timer.c

@@ -322,11 +322,7 @@ int qemu_timeout_ns_to_ms(int64_t ns)
     ms = DIV_ROUND_UP(ns, SCALE_MS);
 
     /* To avoid overflow problems, limit this to 2^31, i.e. approx 25 days */
-    if (ms > (int64_t) INT32_MAX) {
-        ms = INT32_MAX;
-    }
-
-    return (int) ms;
+    return MIN(ms, INT32_MAX);
 }