bug#12561: 24.2.50; trim-string delets a single character if surrounded by spaces

[olegsivokon]

When running (trim-string " x ") I get the result "", I would expect "x"
instead
Sorry, I had to reomve some debug info because it contained personal
information.
I don't think it contained any valuable relevant information though.


In GNU Emacs 24.2.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.11)
 of 2012-08-26 on wvxvw-desktop
Bzr revision: 109787 cyd@gnu.org-20120826134218-63vsnbjvm5rcbzi7
Windowing system distributor `Fedora Project', version 11.0.11203000
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  font-lock-mode: t
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