common controls updown patch

[Shane Shields <locutusenterprises@yahoo.com>]

hi all

this is just a little patch to fix the UPDOWN_GetArrowRect function where the 
midpoint is calculated by adding 1 to odd numbers. before it just added 1 to 
every number now it tests for odd numbers before adding.

Shane

Thanks Dan for the tips

Changelog:

    Shane Shields locutus@all.at
    
    updown.c UPDOWN_GetArrowRect function
    added odd number checking
--- ./dlls/comctl32/updown.c.orig	Mon Jan 14 20:35:07 2002
+++ ./dlls/comctl32/updown.c	Sun Jan 13 17:28:18 2002
@@ -1,4 +1,4 @@
-/*		
+/*
  * Updown control
  *
  * Copyright 1997 Dimitrie O. Paun
@@ -176,14 +176,16 @@
    * round the uneven numbers by adding 1.
    */
   if (dwStyle & UDS_HORZ) {
-    len = rect->right - rect->left + 1; /* compute the width */
+    len = rect->right - rect->left; /* compute the width */
+    if (len % 2 != 0 ) len ++; /* if not an even number then add 1 */
     if (incr)
-      rect->left = rect->left + len/2; 
+      rect->left = rect->left + len/2;
     else
       rect->right =  rect->left + len/2;
   }
   else {
-    len = rect->bottom - rect->top + 1; /* compute the height */
+    len = rect->bottom - rect->top; /* compute the height */
+    if (len % 2 != 0 ) len ++; /* if not an even number then add 1 */
     if (incr)
       rect->bottom =  rect->top + len/2;
     else