Merge branch 'rp/ita-diff-modefix'

"git diff [<tree-ish>] $path" for a $path that is marked with i-t-a
bit was not showing the mode bits from the working tree.

* rp/ita-diff-modefix:
  diff-lib: use worktree mode in diffs from i-t-a entries

diff-lib.c

@@ -219,7 +219,8 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 				continue;
 			} else if (revs->diffopt.ita_invisible_in_index &&
 				   ce_intent_to_add(ce)) {
-				diff_addremove(&revs->diffopt, '+', ce->ce_mode,
+				newmode = ce_mode_from_stat(ce, st.st_mode);
+				diff_addremove(&revs->diffopt, '+', newmode,
 					       &null_oid, 0, ce->name, 0);
 				continue;
 			}