go/internal/gcimporter: missed a NewInterface2 call in prior CL

For https://github.com/golang/lint/issues/402.

Change-Id: Ideaac18b4f0be1674bb07010840b3d10e6ebe9d6
Reviewed-on: https://go-review.googlesource.com/118639
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
diff --git a/go/internal/gcimporter/iimport.go b/go/internal/gcimporter/iimport.go
index 8cd357c..0fd22bb 100644
--- a/go/internal/gcimporter/iimport.go
+++ b/go/internal/gcimporter/iimport.go
@@ -537,7 +537,7 @@
 			methods[i] = types.NewFunc(mpos, r.currPkg, mname, msig)
 		}
 
-		typ := types.NewInterface2(methods, embeddeds)
+		typ := newInterface(methods, embeddeds)
 		r.p.interfaceList = append(r.p.interfaceList, typ)
 		return typ
 	}