path/filepath: fix TestGlobError

Change-Id: I7776547332066e1d7651e9aa06eec301dfaf38bc
Reviewed-on: https://go-review.googlesource.com/45892Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/path/filepath/match_test.go

@@ -154,8 +154,8 @@ func TestGlob(t *testing.T) {
 }
 
 func TestGlobError(t *testing.T) {
-	_, err := Glob("[7]")
-	if err != nil {
+	_, err := Glob("[]")
+	if err == nil {
 		t.Error("expected error for bad pattern; got none")
 	}
 }