runtests: add comment for handle64 pathsep requirement [ci skip]

Cherry-picked from #14949

diff --git a/tests/servers.pm b/tests/servers.pm
index 2648babdb9fb358f3ae9953c1b9df587a233ce00..37519eeb6b6c7fa21c21e7abe69fe1b0e36ac9fd 100644 (file)
--- a/tests/servers.pm
+++ b/tests/servers.pm
@@ -272,6 +272,7 @@ sub clearlocks {
 
     if(os_is_win()) {
         $dir = sys_native_abs_path($dir);
+        # Must use backslashes for handle64 to find a match
         if ($^O eq 'MSWin32') {
             $dir =~ s/\//\\/g;
         }