common/route: route_from_dijkstra returns route_hop array.

This is what (most) callers actually want, so unify it into one place.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

plugins/libplugin.c

@@ -6,6 +6,7 @@
 #include <ccan/tal/str/str.h>
 #include <common/daemon.h>
 #include <common/json_stream.h>
+#include <common/route.h>
 #include <common/utils.h>
 #include <errno.h>
 #include <plugins/libplugin.h>