scripts/delta: hide a git error message we don't care about fatal: path 'src/tool_listhelp.c' exists on disk, but not in [tag] 
diff --git a/scripts/delta b/scripts/delta index 7d5f2b5..bc1681f 100755 --- a/scripts/delta +++ b/scripts/delta 
@@ -63,7 +63,7 @@    # Number of command line options:  $aoptions=`grep -c '{"....--' src/tool_listhelp.c`; -$boptions=`git show $start:src/tool_listhelp.c | grep -c '{"....--'`; +$boptions=`git show $start:src/tool_listhelp.c 2>/dev/null | grep -c '{"....--'`;  $noptions=$aoptions - $boptions;    # Number of files in git