Reserve some memory for image vectors.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/map.h b/src/map.h
index 749c77ce5..1df4a6d9d 100644
--- a/src/map.h
+++ b/src/map.h
@@ -60,7 +60,9 @@ class MapRowVertexes
 {
     public:
         MapRowVertexes()
-        { }
+        {
+            images.reserve(30);
+        }
 
         ~MapRowVertexes();