patch 8.2.0123: complete_info() does not work when CompleteDone is triggered

Problem:    complete_info() does not work when CompleteDone is triggered.
Solution:   Trigger CompleteDone before clearing the info.
diff --git a/src/insexpand.c b/src/insexpand.c
index acddd26..54f8cb3 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -1813,6 +1813,7 @@
     int		want_cindent;
 #endif
     int		retval = FALSE;
+    int		prev_mode = ctrl_x_mode;
 
     // Forget any previous 'special' messages if this is actually
     // a ^X mode key - bar ^R, in which case we wait to see what it gives us.
@@ -2060,6 +2061,18 @@
 
 	    auto_format(FALSE, TRUE);
 
+	    {
+		int new_mode = ctrl_x_mode;
+
+		// Trigger the CompleteDone event to give scripts a chance to
+		// act upon the completion.  Do this before clearing the info,
+		// and restore ctrl_x_mode, so that complete_info() can be
+		// used.
+		ctrl_x_mode = prev_mode;
+		ins_apply_autocmds(EVENT_COMPLETEDONE);
+		ctrl_x_mode = new_mode;
+	    }
+
 	    ins_compl_free();
 	    compl_started = FALSE;
 	    compl_matches = 0;
@@ -2084,9 +2097,6 @@
 	    if (want_cindent && in_cinkeys(KEY_COMPLETE, ' ', inindent(0)))
 		do_c_expr_indent();
 #endif
-	    // Trigger the CompleteDone event to give scripts a chance to act
-	    // upon the completion.
-	    ins_apply_autocmds(EVENT_COMPLETEDONE);
 	}
     }
     else if (ctrl_x_mode == CTRL_X_LOCAL_MSG)