Export: Fix bug with ending colon example

There was a bug that would not close a colon example properly if the
line after the example would not have the required space after the
colon.

lisp/ChangeLog

@@ -1,3 +1,8 @@
+2009-02-24  Carsten Dominik  <carsten.dominik@gmail.com>
+
+	* org-exp.el (org-export-as-html): Fix problem with closing colone
+	example.
+
 2009-02-22  Carsten Dominik  <carsten.dominik@gmail.com>
 
 	* org-export-latex.el (org-export-as-latex)

lisp/org-exp.el

@@ -3554,7 +3554,7 @@ lang=\"%s\" xml:lang=\"%s\">
 	      (insert "<pre class=\"example\">\n"))
 	    (insert (org-html-protect (match-string 3 line)) "\n")
 	    (when (or (not lines)
-		      (not (string-match "^[ \t]*\\(:.*\\)"
+		      (not (string-match "^[ \t]*:\\(\\([ \t]\\|$\\)\\(.*\\)\\)"
 					 (car lines))))
 	      (setq infixed nil)
 	      (insert "</pre>\n"))