gvpr copy: squash a -Wswitch-default warning

This switch is exhaustive.

diff --git a/lib/gvpr/actions.c b/lib/gvpr/actions.c
index 6528d04219d53eef8721d5f14c300bbc4c04c58c..ad44a084fb2e49ccaf70aad9a12074e7dddc0a52 100644 (file)
--- a/lib/gvpr/actions.c
+++ b/lib/gvpr/actions.c
@@ -25,6 +25,7 @@
 #include <ctype.h>
 #include <cgraph/agxbuf.h>
 #include <cgraph/strcasecmp.h>
+#include <cgraph/unreachable.h>
 
 #define KINDS(p) ((AGTYPE(p) == AGRAPH) ? "graph" : (AGTYPE(p) == AGNODE) ? "node" : "edge")
 
@@ -200,6 +201,8 @@ Agobj_t *copy(Agraph_t * g, Agobj_t * obj)
        name = agnameof (AGMKOUT(e));
        nobj = (Agobj_t *) openEdge(g, t, h, name);
        break;
+    default:
+       UNREACHABLE();
     }
     if (nobj)
        copyAttr(obj, nobj);