bug#36664: 27.0.50; definition of string-trim causes warning

[Andreas Röhler]

Hi,

concerns subr-x.el

When byte-compiling a file with def of trim-string inside, get a 
warning: Lexical argument shadows the dynamic variable
    string

Changing the argument from "string" into "strg" for example should 
silence that.

Thanks,

Andreas

In GNU Emacs 27.0.50 (build 1, i686-pc-linux-gnu, GTK+ Version 3.14.5)
 of 2019-06-04