Add missing unistd.h #include.

Adapted from the Void Linux repository, for musl compatibility.

diff --git a/database-builder.h b/database-builder.h
index 89fbc7c5d2a17481e601436f0c8e84a3b05ce568..731598b734f4340ab139c963198575ebd23a2e61 100644 (file)
--- a/database-builder.h
+++ b/database-builder.h
@@ -9,6 +9,7 @@
 #include <random>
 #include <stddef.h>
 #include <string>
+#include <unistd.h>
 #include <utility>
 #include <vector>
 #include <zstd.h>