Add some missing includes

This fixes multiple build errors.
Message-Id: <20210426170820.67042-3-bugaevc@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index e7f3aa9..01cdbd0 100644
--- a/lib.c
+++ b/lib.c
@@ -23,6 +23,7 @@
 #include <errno.h>
 #include <sys/mman.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "lib.h"