patch 9.1.0653: Patch v9.1.0648 not completely right

Problem:  Patch v9.1.0648 not completely right
          (zeertzjq)
Solution: Remove always true condition

closes: #15415

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 0d76b3b..0681153 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -197,11 +197,9 @@
 	// restore to empty when write failed
 	if (empty_bufname)
 	{
-	    // prevent double free
-	    if (buf->b_sfname != buf->b_ffname)
-		VIM_CLEAR(buf->b_sfname);
 	    buf->b_fname = NULL;
 	    VIM_CLEAR(buf->b_ffname);
+	    VIM_CLEAR(buf->b_sfname);
 	    unchanged(buf, TRUE, FALSE);
 	}
     }