Fix compiler warning whilst building perl module

diff --git a/perl-module/PSPP.xs b/perl-module/PSPP.xs
index dbdc73a106f0311ca6669b49927cca4000aa64fb..909ffe9e5324a500ff833f09d2e11a39e22d89af 100644 (file)
--- a/perl-module/PSPP.xs
+++ b/perl-module/PSPP.xs
@@ -32,6 +32,8 @@
 #include "ppport.h"
 
 #include "minmax.h"
+#include <libpspp/hmap.h>
+#include <libpspp/hash-functions.h>
 #include <libpspp/message.h>
 #include <libpspp/version.h>
 #include <libpspp/i18n.h>