msxml3: Cast-qual warning fix

[Andrew Talbot]

Changelog:
    msxml3: Cast-qual warning fix.

diff -urN a/dlls/msxml3/xmlelem.c b/dlls/msxml3/xmlelem.c
--- a/dlls/msxml3/xmlelem.c	2007-06-11 14:48:06.000000000 +0100
+++ b/dlls/msxml3/xmlelem.c	2007-07-24 18:47:41.000000000 +0100
@@ -229,7 +229,7 @@
     ptr = This->node->properties;
     while (ptr)
     {
-        if (!lstrcmpiA((LPSTR)name, (LPSTR)ptr->name))
+        if (!lstrcmpiA((LPSTR)name, (LPCSTR)ptr->name))
         {
             val = xmlNodeListGetString(ptr->doc, ptr->children, 1);
             break;