[libxslt] Allow AM_MAINTAINER_MODE to be disabled

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 3c5d1ed63f1a4afdf49f5f52427d89cc750c0db0
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Sat Apr 2 17:18:39 2022 +0200

    Allow AM_MAINTAINER_MODE to be disabled

 configure.ac | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 31e00562..03391d35 100644
--- a/configure.ac
+++ b/configure.ac
@@ -67,9 +67,7 @@ AC_SUBST(LIBEXSLT_VERSION_NUMBER)
 AC_SUBST(LIBEXSLT_VERSION_EXTRA)
 
 AM_INIT_AUTOMAKE([1.15 foreign no-dist-gzip dist-xz])
-
-# AM_MAINTAINER_MODE
-
+AM_MAINTAINER_MODE([enable])
 AM_SILENT_RULES([yes])
 
 dnl