[gnome-software] trivial: Fix compile without snapd-glib

[Richard Hughes <rhughes src gnome org>]

commit 25cf626e08c3369fd7373f63a9db2ed035a39233
Author: Richard Hughes <richard hughsie com>
Date:   Mon Sep 12 09:30:02 2016 +0100

    trivial: Fix compile without snapd-glib

 src/plugins/Makefile.am |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index 75d690c..ad5e63e 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -46,9 +46,12 @@ plugin_LTLIBRARIES =                                 \
        libgs_plugin_repos.la                           \
        libgs_plugin_fedora-tagger-usage.la             \
        libgs_plugin_icons.la                           \
-       libgs_plugin_snap.la                            \
        libgs_plugin_ubuntuone.la
 
+if HAVE_SNAP
+plugin_LTLIBRARIES += libgs_plugin_snap.la
+endif
+
 if HAVE_PACKAGEKIT
 plugin_LTLIBRARIES +=                                  \
        libgs_plugin_systemd-updates.la                 \
@@ -360,6 +363,7 @@ libgs_plugin_packagekit_proxy_la_LIBADD = $(GS_PLUGIN_LIBS)
 libgs_plugin_packagekit_proxy_la_LDFLAGS = -module -avoid-version
 libgs_plugin_packagekit_proxy_la_CFLAGS = $(GS_PLUGIN_CFLAGS) $(WARN_CFLAGS)
 
+if HAVE_SNAP
 libgs_plugin_snap_la_SOURCES =                         \
        gs-plugin-snap.c                                \
        gs-snapd.h                                      \
@@ -371,6 +375,7 @@ libgs_plugin_snap_la_LIBADD =                               \
        $(JSON_GLIB_LIBS)
 libgs_plugin_snap_la_LDFLAGS = -module -avoid-version
 libgs_plugin_snap_la_CFLAGS = $(GS_PLUGIN_CFLAGS) $(WARN_CFLAGS)
+endif
 
 libgs_plugin_ubuntuone_la_SOURCES =                    \
        gs-plugin-ubuntuone.c