Kernel: Fix framebuffer bounds checks

running yes and pressing ctrl+c paniced the kernel :nekocatwoah:

kernel/kernel/Terminal/FramebufferTerminal.cpp

@@ -102,10 +102,9 @@ namespace Kernel
 
 	void FramebufferTerminalDriver::show_cursor(bool use_data)
 	{
-		// NOTE: cursor is allowed to be on width as scrolling only
+		if (m_cursor_x == width() || m_cursor_y == height())
-		//       happens after character gets printed to next line
-		if (m_cursor_x == width())
 			return;
+		ASSERT(m_cursor_x < width() && m_cursor_y < height());
 
 		if (!use_data)
 			read_cursor();