tree-wide: make more global variables static

let's export as little as we can

1 files changed, 1 insertions, 1 deletions

diff --git a/src/basic/mempool.h b/src/basic/mempool.h
index fea7841bcf..0618b8dd22 100644
--- a/src/basic/mempool.h
+++ b/src/basic/mempool.h
@@ -36,7 +36,7 @@ void* mempool_alloc0_tile(struct mempool *mp);
 void mempool_free_tile(struct mempool *mp, void *p);
 
 #define DEFINE_MEMPOOL(pool_name, tile_type, alloc_at_least) \
-struct mempool pool_name = { \
+static struct mempool pool_name = { \
         .tile_size = sizeof(tile_type), \
         .at_least = alloc_at_least, \
 }