[network-manager-openvpn/nm-1-2] build: beautify the make output a tiny bit

[Thomas Haller <thaller src gnome org>]

commit 9cb82b34546c9ad34955fb90698854e3560f4676
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Wed Mar 8 16:26:37 2017 +0100

    build: beautify the make output a tiny bit
    
    (cherry picked from commit a91d56f7a07fc5b1568a8a18c4c39205df51a763)

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index e541976..3ae429e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -360,7 +360,7 @@ appdata_in_files = appdata/network-manager-openvpn.metainfo.xml.in
 @INTLTOOL_XML_RULE@
 
 nm-openvpn-service.name: $(srcdir)/nm-openvpn-service.name.in
-       sed -e 's|[@]LIBEXECDIR[@]|$(libexecdir)|g' \
+       $(AM_V_GEN) sed -e 's|[@]LIBEXECDIR[@]|$(libexecdir)|g' \
            -e 's|[@]PLUGINDIR[@]/|@NM_PLUGIN_DIR_NAME_FILE@|g' \
            $^ >$@