libshiboken: Use empty() to check for empty containers as clang-tidy advises

Using the size() method for that purpose can be expensive for standard
containers.

Task-number: PYSIDE-727
Change-Id: I0da34e271503384a741d856fff5e84fee67bc97f
Reviewed-by: Christian Tismer <tismer@stackless.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/sources/shiboken2/libshiboken/bindingmanager.cpp b/sources/shiboken2/libshiboken/bindingmanager.cpp
index 2cc7847a8..0aa520b38 100644
--- a/sources/shiboken2/libshiboken/bindingmanager.cpp
+++ b/sources/shiboken2/libshiboken/bindingmanager.cpp
@@ -197,7 +197,7 @@ BindingManager::~BindingManager()
         while (!m_d->wrapperMapper.empty()) {
             Object::destroy(m_d->wrapperMapper.begin()->second, const_cast<void*>(m_d->wrapperMapper.begin()->first));
         }
-        assert(m_d->wrapperMapper.size() == 0);
+        assert(m_d->wrapperMapper.empty());
     }
     delete m_d;
 }