CLEANUP: Add haproxy/xxhash.h to avoid modifying import/xxhash.h
This solves setting XXH_INLINE_ALL in a cleaner way, because the imported
header is not modified, easing future updates.
see 6f7cc11e6dd0f01b437fba893da2edd2362660a2
diff --git a/src/sample.c b/src/sample.c
index e4bb318..3126be1 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -18,7 +18,6 @@
#include <import/mjson.h>
#include <import/sha1.h>
-#include <import/xxhash.h>
#include <haproxy/api.h>
#include <haproxy/arg.h>
@@ -43,6 +42,7 @@
#include <haproxy/tools.h>
#include <haproxy/uri_auth-t.h>
#include <haproxy/vars.h>
+#include <haproxy/xxhash.h>
/* sample type names */
const char *smp_to_type[SMP_TYPES] = {