more "declared and not used".

the last round omitted := range and only
checked 1 out of N vars in a multi-var :=

R=r
OCL=34624
CL=34638

src/pkg/net/server_test.go

@@ -33,7 +33,7 @@ func runServe(t *testing.T, network, addr string, listening chan<- string, done
 	listening <- l.Addr();
 
 	for {
-		fd, addr, err := l.Accept();
+		fd, _, err := l.Accept();
 		if err != nil {
 			break;
 		}