fix msvc build

1 files changed, 1 insertions, 1 deletions

diff --git a/wall-tileset-tool/main.cpp b/wall-tileset-tool/main.cpp
index e9dd6355..c23b3464 100644
--- a/wall-tileset-tool/main.cpp
+++ b/wall-tileset-tool/main.cpp
@@ -182,7 +182,7 @@ bool do_group(state st, size_t i, size_t j, Group& new_group)
     fm_assert(Math::max(expected_size.x(), expected_size.y()) < max_image_dimension);
     fm_assert((size_t)st.groups.at(j).G == j);
 
-    auto& frames = [&] -> auto&& {
+    auto& frames = [&]() -> auto&& {
         for (auto& g : st.groups)
             if ((size_t)g.G == j)
                 return g.frames;