osdmaptool.cc: : use empty() instead of 'size() < 1'

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().

This way the code is more logical.

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

diff --git a/src/osdmaptool.cc b/src/osdmaptool.cc
index 6df7eb038c313414094ba57f2e49f6881c890dfd..66feeb94d8149924b7c30e8a12259f9015574586 100644 (file)
--- a/src/osdmaptool.cc
+++ b/src/osdmaptool.cc
@@ -120,7 +120,7 @@ int main(int argc, const char **argv)
       ++i;
     }
   }
-  if (args.size() < 1) {
+  if (args.empty()) {
     cerr << me << ": must specify osdmap filename" << std::endl;
     usage();
   }