[PATCH] trivial optimization in file.c::panel_operate()

[Denys Vlasenko]

Hi Slava,

I noticed an incorrectly indented if() in file.c::panel_operate().
Took a better look, and found out it can be tweaked in several ways.

This patch is the result.
It contains the following trivial optimizations:

* merged two identical "dest_dir_ = g_strdup (dest_dir)" ops.
* simplified check for trailing '/' (no need to strcmp 1-char string).
* since g_free (NULL) is safe, merged two separate
  "if empty string then bail out" code paths.
* fixed wording in a comment.

Slava, is it ok to send patches in attachments?

Do you want kernel-style "Signed-off-by" lines in patch submissions?
--
vda
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