lib-sql: Fix compiler warning with OSX

diff --git a/src/lib-sql/sql-api.h b/src/lib-sql/sql-api.h
index 768dc7de6a06dcb7a030e85bfc3555fbcbb95367..b0ac3c1b99e61a4c29123817f710181b05de7414 100644 (file)
--- a/src/lib-sql/sql-api.h
+++ b/src/lib-sql/sql-api.h
@@ -1,6 +1,8 @@
 #ifndef SQL_API_H
 #define SQL_API_H
 
+struct timespec;
+
 /* This SQL API is designed to work asynchronously. The underlying drivers
    however may not. */