line_buffer_read() did not properly remove the bytes read, it just bumped

the read offset.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9152 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/kernel/drivers/tty/line_buffer.cpp

@@ -82,8 +82,10 @@ line_buffer_user_read(struct line_buffer &buffer, char *data, size_t length)
 			bytesRead = B_BAD_ADDRESS;
 	}
 
-	if (bytesRead > 0)
+	if (bytesRead > 0) {
 		buffer.first = (buffer.first + bytesRead) % buffer.size;
+		buffer.in -= bytesRead;
+	}
 
 	return bytesRead;
 }