patch 8.2.0191: cannot put a terminal in a popup window

Problem:    Cannot put a terminal in a popup window.
Solution:   Allow opening a terminal in a popup window.  It will always have
            keyboard focus until closed.
diff --git a/src/proto/terminal.pro b/src/proto/terminal.pro
index 5206add..8d37db8 100644
--- a/src/proto/terminal.pro
+++ b/src/proto/terminal.pro
@@ -26,7 +26,8 @@
 int term_is_finished(buf_T *buf);
 int term_show_buffer(buf_T *buf);
 void term_change_in_curbuf(void);
-int term_get_attr(buf_T *buf, linenr_T lnum, int col);
+int term_get_attr(win_T *wp, linenr_T lnum, int col);
+void term_update_colors(void);
 char_u *term_get_status_text(term_T *term);
 int set_ref_in_term(int copyID);
 void set_terminal_default_colors(int cterm_fg, int cterm_bg);