test_librbd.cc: use static_cast instead of c-style

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

diff --git a/src/test/librbd/test_librbd.cc b/src/test/librbd/test_librbd.cc
index a467e928126310e93a323ca2f17f5832daa0efb7..983ee504578147a83689b5448d240378a1b9ea4f 100644 (file)
--- a/src/test/librbd/test_librbd.cc
+++ b/src/test/librbd/test_librbd.cc
@@ -657,7 +657,7 @@ TEST_F(TestLibRBD, UpdateWatchAndResize)
   uint64_t size = 2 << 20;
   struct Watcher {
     static void cb(void *arg) {
-      Watcher *watcher = (Watcher *)arg;
+      Watcher *watcher = static_cast<Watcher *>(arg);
       watcher->handle_notify();
     }
     Watcher(rbd_image_t &image) : m_image(image), m_lock("lock") {}