testcommon: spawn-aware system() and qx[] workalikes

Barely noticeable on Linux, but this gives a 1-2% speedup
on a FreeBSD 11.3 VM and lets us use built-in redirects
rather than relying on /bin/sh.

1 files changed, 4 insertions, 4 deletions

diff --git a/t/httpd.t b/t/httpd.t
index 11511c73..61aec3b4 100644
--- a/t/httpd.t
+++ b/t/httpd.t
@@ -64,22 +64,22 @@ EOF
                 is($conn->read($buf, 1), 0, "EOF");
         }
 
-        is(system(qw(git clone -q --mirror),
+        is(xsys(qw(git clone -q --mirror),
                         "http://$host:$port/$group", "$tmpdir/clone.git"),
                 0, 'smart clone successful');
 
         # ensure dumb cloning works, too:
-        is(system('git', "--git-dir=$maindir",
+        is(xsys('git', "--git-dir=$maindir",
                 qw(config http.uploadpack false)),
                 0, 'disable http.uploadpack');
-        is(system(qw(git clone -q --mirror),
+        is(xsys(qw(git clone -q --mirror),
                         "http://$host:$port/$group", "$tmpdir/dumb.git"),
                 0, 'clone successful');
 
         ok($td->kill, 'killed httpd');
         $td->join;
 
-        is(system('git', "--git-dir=$tmpdir/clone.git",
+        is(xsys('git', "--git-dir=$tmpdir/clone.git",
                   qw(fsck --no-verbose)), 0,
                 'fsck on cloned directory successful');
 }