test/filestore/test_idempotent.cc: prefer prefix ++operator for iterators

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

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/filestore/test_idempotent.cc b/src/test/filestore/test_idempotent.cc
index 9feba3f9f6a..6be706d97b6 100644
--- a/src/test/filestore/test_idempotent.cc
+++ b/src/test/filestore/test_idempotent.cc
@@ -38,7 +38,7 @@ typename T::iterator rand_choose(T &cont) {
   int index = rand() % cont.size();
   typename T::iterator retval = cont.begin();
 
-  for (; index > 0; --index) retval++;
+  for (; index > 0; --index) ++retval;
   return retval;
 }