hush: Print error messages on shift -1

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash_test/ash-misc/shift1.tests b/shell/ash_test/ash-misc/shift1.tests
index 0992d9b..2774b35 100755
--- a/shell/ash_test/ash-misc/shift1.tests
+++ b/shell/ash_test/ash-misc/shift1.tests
@@ -1,5 +1,5 @@
 $THIS_SH -c 'shift;    echo "$@"' 0 1 2 3 4
-#We do abort on -1, but then we abort. bash executes echo.
+# We do complain on -1, but then we abort. bash executes echo.
 $THIS_SH -c 'shift -1; echo "$@"' 0 1 2 3 4
 $THIS_SH -c 'shift  0; echo "$@"' 0 1 2 3 4
 $THIS_SH -c 'shift  1; echo "$@"' 0 1 2 3 4