Initialise the hash map containing extension data with 2048 entries

2048 is a decent estimation for the amount of unique extensions one can have on
one's hard drive. On a hard drive scan, this gave a decent performance boost. On
my machine I got a difference from 280ms to 220ms on average.

1 files changed, 2 insertions, 0 deletions

diff --git a/windirstat/dirstatdoc.cpp b/windirstat/dirstatdoc.cpp
index 61e66c2..dee3ede 100644
--- a/windirstat/dirstatdoc.cpp
+++ b/windirstat/dirstatdoc.cpp
@@ -749,6 +749,8 @@ void CDirstatDoc::RebuildExtensionData()
     CWaitCursor wc;
 
     m_extensionData.RemoveAll();
+    // 2048 is a rough estimate for amount of different extensions
+    m_extensionData.InitHashTable(2048);
     m_rootItem->RecurseCollectExtensionData(&m_extensionData);
 
     CStringArray sortedExtensions;