CLEANUP: hpack: no need to include chunk.h, only include buf.h
Chunk.h used to be needed to declare the struct chunk which we don't
use anymore, let's fall back to the lighter buf.h
diff --git a/include/common/hpack-enc.h b/include/common/hpack-enc.h
index 5246b83..23c886a 100644
--- a/include/common/hpack-enc.h
+++ b/include/common/hpack-enc.h
@@ -29,7 +29,7 @@
#define _COMMON_HPACK_ENC_H
#include <stdint.h>
-#include <common/chunk.h>
+#include <common/buf.h>
#include <common/config.h>
#include <common/ist.h>