PGMonitor.cc: prefer empty() over size() for emptiness check

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

diff --git a/src/mon/PGMonitor.cc b/src/mon/PGMonitor.cc
index fc307e3e3d2591edc2bf182bd42ff919575c8af4..d4fc5781c04d762d6c125ef5b8be31274bcf3c2d 100644 (file)
--- a/src/mon/PGMonitor.cc
+++ b/src/mon/PGMonitor.cc
@@ -1258,7 +1258,7 @@ int64_t PGMonitor::get_rule_avail(OSDMap& osdmap, int ruleno)
   int r = osdmap.crush->get_rule_weight_osd_map(ruleno, &wm);
   if (r < 0)
     return r;
-  if(wm.size() == 0)
+  if(wm.empty())
     return 0;
   int64_t min = -1;
   for (map<int,float>::iterator p = wm.begin(); p != wm.end(); ++p) {