optimise find/insert pattern

if we're doing a find/insert on a set or a map, it is better to just do
a conditional insert/emplace operation than triggering two lookups.

Change-Id: I80da5097f5a89fe30fa348ce5b6e747c34287a8d
Reviewed-on: https://gerrit.libreoffice.org/70937
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 1 insertions, 4 deletions

diff --git a/vcl/osx/a11yfocustracker.cxx b/vcl/osx/a11yfocustracker.cxx
index a84b27d38d66..b62c27edfbc7 100644
--- a/vcl/osx/a11yfocustracker.cxx
+++ b/vcl/osx/a11yfocustracker.cxx
@@ -248,11 +248,8 @@ void AquaA11yFocusTracker::window_got_focus(vcl::Window *pWindow)
     }
     else
     {
-        if( m_aDocumentWindowList.find(pWindow) == m_aDocumentWindowList.end() )
-        {
-            m_aDocumentWindowList.insert(pWindow);
+        if( m_aDocumentWindowList.insert(pWindow).second )
             m_xDocumentFocusListener->attachRecursive(xAccessible, xContext, xStateSet);
-        }
     }
 }