[patch] found memory leak in do_ecmd()

[h_east]

Hi Bram and list,

I found memory leak in do_ecmd().

If u_savecommon() is FAIL, then `new_name` does not freed.
I wrote a patch.
Check it please.

--
Best regards,
Hirohito Higashi (a.k.a. h_east)

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diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 860d3dc..e40e435 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -4091,7 +4091,10 @@ do_ecmd(
 	    u_sync(FALSE);
 	    if (u_savecommon(0, curbuf->b_ml.ml_line_count + 1, 0, TRUE)
 								     == FAIL)
+	    {
+		vim_free(new_name);
 		goto theend;
+	    }
 	    u_unchanged(curbuf);
 	    buf_freeall(curbuf, BFA_KEEP_UNDO);