avoid storing SUCCESS-PLUS uuid when it is the remote uuid

This is slightly belt and suspenders, but nothing guarantees that the
peer avoids including its uuid in the SUCCESS-PLUS list as it's supposed
to. And while it probably doesn't matter if the location log is updated
redundantly, let's not find out.

Remote/P2P.hs

@@ -57,7 +57,7 @@ chainGen addr r u rc gc rs = do
 		{ uuid = u
 		, cost = cst
 		, name = Git.repoDescribe r
-		, storeKey = store gc protorunner
+		, storeKey = store u gc protorunner
 		, retrieveKeyFile = retrieve gc protorunner
 		, retrieveKeyFileCheap = Nothing
 		, retrievalSecurityPolicy = RetrievalAllKeysSecure