move free_arr() into util.c

1 files changed, 2 insertions, 0 deletions

diff --git a/util.h b/util.h
index 0a48edd..8c7a28d 100644
--- a/util.h
+++ b/util.h
@@ -1,3 +1,5 @@
 #define nelem(arr) (sizeof(arr)/sizeof(arr[0]))
 #define min(a, b) ((a < b) ? a : b)
 #define max(a, b) ((a > b) ? a : b)
+
+void free_arr(void **arr, int n);