test_files.sh: Fix the first line.

For some reason this prevented running the test only
on OS/2 and even on that it broke only recently.

Thanks to Elbert Pol.

diff --git a/tests/test_files.sh b/tests/test_files.sh
index 4eb9796..2fa8382 100755 (executable)
--- a/tests/test_files.sh
+++ b/tests/test_files.sh
@@ -1,4 +1,4 @@
-#/bin/sh
+#!/bin/sh
 
 ###############################################################################
 #