spawn: don't append to scalarrefs on stdout/stderr

None of our current code relies on it, and I can't imagine it's
something we'd need in the future, actually...  This keeps the
door open for relying more on Spawn in TestCommon.

1 files changed, 1 insertions, 1 deletions

diff --git a/t/spawn.t b/t/spawn.t
index 3479b6b3..48f541b8 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -26,7 +26,7 @@ require PublicInbox::DS;
         is($out, 'in', 'stdin read and stdout captured');
         $opt->{0} = \"IN\n3\nLINES";
         my @out = run_qx(['sh', '-c', 'echo E >&2; cat'], undef, $opt);
-        is($e, "e\nE\n", 'captured stderr appended to string');
+        is($e, "E\n", 'captured stderr clobbers string');
         is_deeply(\@out, [ "IN\n", "3\n", 'LINES' ], 'stdout array');
 }