--- a/tests/testlib/pythonpath.sh	Fri Jan 04 19:17:38 2019 -0500
+++ b/tests/testlib/pythonpath.sh	Sun Jan 06 00:27:54 2019 +0800
@@ -3,8 +3,7 @@
 export SRCDIR="`dirname $TESTDIR`"
 if [ -n "$PYTHONPATH" ]; then
     export HGTEST_ORIG_PYTHONPATH=$PYTHONPATH
-    osname="`uname -o`"
-    if (uname -o | grep -q Msys); then
+    if uname -o | grep -q Msys; then
         export PYTHONPATH="$SRCDIR;$PYTHONPATH"
     else
         export PYTHONPATH=$SRCDIR:$PYTHONPATH