[gupnp] context-manager: Fix issue when using linux cm

[Jens Georg <jensgeorg src gnome org>]

commit 155f13f11211dc19fa46c7bac5705d82048cecd9
Author: Jens Georg <mail jensge org>
Date:   Fri Nov 2 19:16:17 2018 +0100

    context-manager: Fix issue when using linux cm
    
    Accidently removed include with 997e950e592956ade2a6e9028830af358361a4c5

 libgupnp/gupnp-context-manager.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/libgupnp/gupnp-context-manager.c b/libgupnp/gupnp-context-manager.c
index ffdb710..c4ff41d 100644
--- a/libgupnp/gupnp-context-manager.c
+++ b/libgupnp/gupnp-context-manager.c
@@ -55,6 +55,8 @@
 #include "gupnp-network-manager.h"
 #elif defined(USE_CONNMAN)
 #include "gupnp-connman-manager.h"
+#elif defined(USE_NETLINK)
+#include "gupnp-linux-context-manager.h"
 #endif
 
 struct _GUPnPContextManagerPrivate {