go/types: clean up after test

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5245057

diff --git a/src/pkg/go/types/Makefile b/src/pkg/go/types/Makefile
index 4ca707c7351f882ba9f4bf3d8cbb58dfa1b2e512..d21ebc128f5594205fddaba7e14bc97d1492a4bb 100644 (file)
--- a/src/pkg/go/types/Makefile
+++ b/src/pkg/go/types/Makefile
@@ -14,3 +14,5 @@ GOFILES=\
        universe.go\
 
 include ../../../Make.pkg
+
+CLEANFILES+=testdata/exports.[$(OS)]