bug#11328: 24.1.50; Comment in `dired-copy-file-recursive' code

[Drew Adams]

Just a nit.  But if you are going to add unnecessary comments to the
code that describe only what everyone can see the code does, then at
least get them right.  Otherwise you mislead readers.
 
This comment is incorrect: "Not a directory".  What is actually true at
that point is the following;
 
a. RECURSIVE is nil
b. RECURSIVE is non-nil and this is not a directory
c. this is a directory, RECURSIVE is non-nil and not `always',
   and the user replied `n'
 
(Similarly, the comment "This is a directory", though true, does not
convey the real meaning.  It is a directory AND it should be copied
recursively.)
 
It is a bad habit to add such comments to the code.  Comments should
generally be used when it is not obvious what the code does or why.
 
In GNU Emacs 24.1.50.1 (i386-mingw-nt5.1.2600)
 of 2012-04-23 on MARVIN
Bzr revision: 108006
agustin.martin@hispalinux.es-20120423103325-xmra3329elgzhmpc
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include
 -ID:/devel/emacs/libs/libiconv-1.13.1-1-dev/include
 -ID:/devel/emacs/libs/libxml2-2.7.8/include/libxml2'