Reenabled the Qemu workaround: the frame buffer is now cleared after a mode change.

After all, there might be real graphics card which behave the same??


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12551 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/boot/platform/bios_ia32/video.cpp

@@ -485,7 +485,7 @@ fallback:
 	// clear the video memory
 	// ToDo: this shouldn't be necessary on real hardware (and Bochs), but
 	//	at least booting with Qemu looks ugly when this is missing
-	//memset((void *)sFrameBuffer, 0, gKernelArgs.frame_buffer.physical_buffer.size);
+	memset((void *)sFrameBuffer, 0, gKernelArgs.frame_buffer.physical_buffer.size);
 
 	if (sMode != NULL) {
 		if (vesa_set_palette((const uint8 *)kPalette, 0, 256) != B_OK)