Fix count_highlight_color not to crash 64 bit systems.

--- linux-orig/drivers/char/speakup/speakup.c	2005-12-15 16:26:21.000000000 +0000
+++ linux/drivers/char/speakup/speakup.c	2006-01-02 23:27:15.000000000 +0000
@@ -2148,19 +2155,20 @@ reset_highlight_buffers( struct vc_data 
 static int
 count_highlight_color(struct vc_data *vc)
 {
-	int i,j,bg,ch;
+	int i,bg;
 	int cc;
 	int vc_num=vc->vc_num;
-	unsigned int start,end;
+	u16 ch;
+	u16 *start = (u16 *) vc->vc_origin;
 
 	for ( i=0 ; i<8 ; i++ )
 		speakup_console[vc_num]->ht.bgcount[i]=0;		
 
-	start=vc->vc_origin;
 	for ( i=0 ; i<vc->vc_rows; i++ ){
-		end = start + vc->vc_cols*2;
-		for ( j=start ; j<end ; j+=2){
-			ch = scr_readw( (ushort *) j );
+		u16 *end = start + vc->vc_cols*2;
+		u16 *ptr;
+		for ( ptr=start ; ptr<end ; ptr++){
+			ch = scr_readw( ptr );
 			bg = ( ch & 0x7000 ) >> 12;
 			speakup_console[vc_num]->ht.bgcount[bg]++;
 		}