Missing include in wipe.h

Change-Id: I6c29d6e90c5bc17b3070595c89fad9ca5c3f75f9
diff --git a/ext4_utils/wipe.h b/ext4_utils/wipe.h
index 814877d..ecde9c1 100644
--- a/ext4_utils/wipe.h
+++ b/ext4_utils/wipe.h
@@ -17,6 +17,8 @@
 #ifndef _WIPE_H_
 #define _WIPE_H_
 
+#include "ext4_utils.h"
+
 int wipe_block_device(int fd, s64 len);
 
 #endif