package main

func foo(y) { }

was:
x.go:2: NONAME-y G0 u(1) a(1) l(77) x(-1000000000) is not a type

now:
x.go:2: y is not a type

R=ken
OCL=30764
CL=30764

src/cmd/gc/dcl.c

@@ -1299,7 +1299,7 @@ xanondcl(Node *nt, int dddok)
 
 	t = nt->type;
 	if(nt->op != OTYPE) {
-		yyerror("%N is not a type", nt);
+		yyerror("%S is not a type", nt->sym);
 		t = types[TINT32];
 	}
 	n = nod(ODCLFIELD, N, N);