vga: drop line_offset variable

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/display/vga.c

@@ -1464,7 +1464,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
 {
     DisplaySurface *surface = qemu_console_surface(s->con);
     int y1, y, update, linesize, y_start, double_scan, mask, depth;
-    int width, height, shift_control, line_offset, bwidth, bits;
+    int width, height, shift_control, bwidth, bits;
     ram_addr_t page0, page1;
     DirtyBitmapSnapshot *snap = NULL;
     int disp_width, multi_scan, multi_run;
@@ -1614,7 +1614,6 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
         s->cursor_invalidate(s);
     }
 
-    line_offset = s->line_offset;
 #if 0
     printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
            width, height, v, line_offset, s->cr[9], s->cr[VGA_CRTC_MODE],
@@ -1629,7 +1628,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
 
     if (!full_update) {
         ram_addr_t region_start = addr1;
-        ram_addr_t region_end = addr1 + line_offset * height;
+        ram_addr_t region_end = addr1 + s->line_offset * height;
         vga_sync_dirty_bitmap(s);
         if (s->line_compare < height) {
             /* split screen mode */
@@ -1681,7 +1680,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
         if (!multi_run) {
             mask = (s->cr[VGA_CRTC_MODE] & 3) ^ 3;
             if ((y1 & mask) == mask)
-                addr1 += line_offset;
+                addr1 += s->line_offset;
             y1++;
             multi_run = multi_scan;
         } else {