Quieten without-x, without-xml2 builds

* lisp/help.el (x-display-pixel-height, x-display-pixel-width):
* lisp/image.el (image-flush, image-size):
* lisp/textmodes/sgml-mode.el (libxml-parse-html-region):
Declare for compiler.

1 files changed, 3 insertions, 0 deletions

diff --git a/lisp/image.el b/lisp/image.el
index b5f22351377..b69bf930545 100644
--- a/lisp/image.el
+++ b/lisp/image.el
@@ -29,6 +29,7 @@
   "Image support."
   :group 'multimedia)
 
+(declare-function image-flush "image.c" (spec &optional frame))
 (defalias 'image-refresh 'image-flush)
 
 (defconst image-type-header-regexps
@@ -1001,6 +1002,8 @@ default is 20%."
               (setq new (nconc new (list key val))))))
           new)))
 
+(declare-function image-size "image.c" (spec &optional pixels frame))
+
 (defun image--current-scaling (image new-image)
   ;; The image may be scaled due to many reasons (:scale, :max-width,
   ;; etc), so find out what the current scaling is based on the