test/run: clear $E in case it's already set in environment.

R=rsc
CC=golang-dev
http://codereview.appspot.com/4312054

1 files changed, 2 insertions, 0 deletions

diff --git a/test/run b/test/run
index 28d0caa0f..a74933f35 100755
--- a/test/run
+++ b/test/run
@@ -5,6 +5,8 @@
 
 eval $(gomake --no-print-directory -f ../src/Make.inc go-env)
 
+export E=
+
 case X"$GOARCH" in
 Xamd64)
 	export A=6