lisp/url/url-methods.el: Fix format error when http_proxy is empty string

lisp/url/url-methods.el: Fix format error when http_proxy is empty string

2006-09-18  Michael Olson  <mwolson@gnu.org>

	* url-methods.el (url-scheme-register-proxy): Handle case where
	getenv returns an empty string for http_proxy.  This prevents an
	error when calling `format' later on.

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Files to commit:
   lisp/url/ChangeLog
   lisp/url/url-methods.el

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Revision: emacs@sv.gnu.org/emacs--devo--0--patch-441
Creator:  Michael Olson <mwolson@gnu.org>