Merge pull request #3401 from odonnellryan/patch-1

Swap "grep -q" with "grep > /dev/null" so that "go help" doesn't balk when the pipe closes unexpectedly (since "grep -q" closes the pipe the second it finds a match)
Upstream-commit: d5bb0ff80a3cd95ed6a3774248f3ee3561cb5f22
Component: engine

components/engine/hack/make.sh

@@ -69,7 +69,7 @@ BUILDFLAGS='-tags netgo -a'
 
 HAVE_GO_TEST_COVER=
 if \
-	go help testflag | grep -q -- -cover \
+	go help testflag | grep -- -cover > /dev/null \
 	&& go tool -n cover > /dev/null 2>&1 \
 ; then
 	HAVE_GO_TEST_COVER=1