HashIndex.cc: use empty() instead of size() to check for emptiness

Use empty() since it should be prefered as it has, following the
standard, a constant time complexity regardless of the containter
type. The same is not guaranteed for size().

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

diff --git a/src/os/HashIndex.cc b/src/os/HashIndex.cc
index d0d155c8d18d2cff68b8046e7ecdcbddd4112fb5..a1d369d8e509f705d6ec57ef7a0bcf29ad2614c4 100644 (file)
--- a/src/os/HashIndex.cc
+++ b/src/os/HashIndex.cc
@@ -346,7 +346,7 @@ int HashIndex::recursive_remove(const vector<string> &path) {
   r = list_objects(path, 0, 0, &objects);
   if (r < 0)
     return r;
-  if (objects.size())
+  if (!objects.empty())
     return -ENOTEMPTY;
   vector<string> subdir(path);
   for (set<string>::iterator i = subdirs.begin();