ospf6d: Extend the "[no] debug ospf6 route" vty commands

* ospf6_route.c ([no_]debug_ospf6_route) Include memory as a debug
  option.  This allows ospf6 route memory debugging to be enabled or
  disabled interactively or from a config file.
diff --git a/ospf6d/ospf6_route.c b/ospf6d/ospf6_route.c
index b13897d..398acfa 100644
--- a/ospf6d/ospf6_route.c
+++ b/ospf6d/ospf6_route.c
@@ -1336,13 +1336,14 @@
 
 DEFUN (debug_ospf6_route,
        debug_ospf6_route_cmd,
-       "debug ospf6 route (table|intra-area|inter-area)",
+       "debug ospf6 route (table|intra-area|inter-area|memory)",
        DEBUG_STR
        OSPF6_STR
        "Debug route table calculation\n"
        "Debug detail\n"
        "Debug intra-area route calculation\n"
        "Debug inter-area route calculation\n"
+       "Debug route memory use\n"
        )
 {
   unsigned char level = 0;
@@ -1353,18 +1354,21 @@
     level = OSPF6_DEBUG_ROUTE_INTRA;
   else if (! strncmp (argv[0], "inter", 5))
     level = OSPF6_DEBUG_ROUTE_INTER;
+  else if (! strncmp (argv[0], "memor", 5))
+    level = OSPF6_DEBUG_ROUTE_MEMORY;
   OSPF6_DEBUG_ROUTE_ON (level);
   return CMD_SUCCESS;
 }
 
 DEFUN (no_debug_ospf6_route,
        no_debug_ospf6_route_cmd,
-       "no debug ospf6 route (table|intra-area|inter-area)",
+       "no debug ospf6 route (table|intra-area|inter-area|memory)",
        NO_STR
        DEBUG_STR
        OSPF6_STR
        "Debug route table calculation\n"
-       "Debug intra-area route calculation\n")
+       "Debug intra-area route calculation\n"
+       "Debug route memory use\n")
 {
   unsigned char level = 0;
 
@@ -1374,6 +1378,8 @@
     level = OSPF6_DEBUG_ROUTE_INTRA;
   else if (! strncmp (argv[0], "inter", 5))
     level = OSPF6_DEBUG_ROUTE_INTER;
+  else if (! strncmp (argv[0], "memor", 5))
+    level = OSPF6_DEBUG_ROUTE_MEMORY;
   OSPF6_DEBUG_ROUTE_OFF (level);
   return CMD_SUCCESS;
 }