[gedit] build: add introspection to distcheck

[Sébastien Lafargue <slafargue src gnome org>]

commit 8309f21270b3914d2182614b48be4ecb75e1f399
Author: Sebastien Lafargue <slafargue gnome org>
Date:   Tue Dec 4 23:22:13 2018 +0100

    build: add introspection to distcheck

 Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/Makefile.am b/Makefile.am
index 901c91494..e148411a9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -66,7 +66,7 @@ MAINTAINERCLEANFILES =                \
        po/*.header             \
        po/*.sin
 
-DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc
+DISTCHECK_CONFIGURE_FLAGS = --enable-gtk-doc --enable-introspection
 
 GRESDEPS = $(srcdir)/$1 $(shell $(GLIB_COMPILE_RESOURCES) --generate-dependencies --sourcedir 
$(srcdir)/$(dir $1) $(srcdir)/$1)