Fix build.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@33747 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/libs/compat/freebsd_network/device.h

@@ -24,6 +24,9 @@
 
 #include "shared.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 struct root_device_softc {
 	struct pci_info	pci_info;
@@ -83,4 +86,8 @@ void device_sprintf_name(device_t dev, const char *format, ...)
 void ifq_init(struct ifqueue *, const char *);
 void ifq_uninit(struct ifqueue *);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif	/* DEVICE_H */