internal/gocore: reverse sense of indirect test

CL 682075 is 100% wrong. IsIndir is true if the direct bit is *not* set.

Change-Id: Ife8cc7b08e7051310e3f799bf6e58822f07d1733
Reviewed-on: https://go-review.googlesource.com/c/debug/+/690156
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

internal/gocore/type.go

diff --git a/internal/gocore/type.go b/internal/gocore/type.go
index c384800..f75ff34 100644
--- a/internal/gocore/type.go
+++ b/internal/gocore/type.go
@@ -664,7 +664,7 @@
 	typr := p.findRuntimeType(t)
 	if tflagDirectIface, ok := p.rtConsts.find("internal/abi.TFlagDirectIface"); ok {
 		// 1.26 and later, direct bit stored in tflags
-		return typr.TFlag()&uint8(tflagDirectIface) != 0
+		return typr.TFlag()&uint8(tflagDirectIface) == 0
 	}
 	// 1.25 and earlier, direct bit stored in kind field
 	return typr.Kind_()&uint8(p.rtConsts.get("internal/abi.KindDirectIface")) == 0