BUILD/MINOR: missing header file

In the header file "types/proto_http.h", the list are used
but the header file "mini-clist.h" is not included.
diff --git a/include/types/proto_http.h b/include/types/proto_http.h
index d0fa766..5a671b0 100644
--- a/include/types/proto_http.h
+++ b/include/types/proto_http.h
@@ -24,6 +24,7 @@
 
 #include <common/chunk.h>
 #include <common/config.h>
+#include <common/mini-clist.h>
 
 #include <types/hdr_idx.h>