[PATCH mptcp-next v6 2/9] selftests: net: lib: support errexit with busywait

["Matthieu Baerts (NGI0)" <matttbe@kernel.org>]

If errexit is enabled ('set -e'), loopy_wait -- or busywait and others
using it -- will stop after the first failure.

Note that if the returned status of loopy_wait is checked, and even if
errexit is enabled, Bash will not stop at the first error.

Fixes: 25ae948b4478 ("selftests/net: add lib.sh")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
 tools/testing/selftests/net/lib.sh | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/testing/selftests/net/lib.sh b/tools/testing/selftests/net/lib.sh
index be80f7b1f9d7..2fbc01003b0f 100644
--- a/tools/testing/selftests/net/lib.sh
+++ b/tools/testing/selftests/net/lib.sh
@@ -68,9 +68,7 @@ loopy_wait()
 	while true
 	do
 		local out
-		out=$("$@")
-		local ret=$?
-		if ((!ret)); then
+		if out=$("$@"); then
 			echo -n "$out"
 			return 0
 		fi

-- 
2.43.0