Preallocate memory for image/file presence caches

Should avoid unnecessary reallocations. (cherry-picked from commit 949266b5aa)
2018-05-22 00:27:22 +11:00 · 2018-05-22 00:27:22 +11:00 · 6265087354
commit 6265087354
parent e6e8e20551
1 changed files with 1 additions and 0 deletions
--- a/src/image.cpp
+++ b/src/image.cpp
@ -106,6 +106,7 @@ public:
 	cache_type()
 		: content_()
 	{
+		content_.reserve(20000);
 	}

 	cache_item<T>& get_element(int index)