patch 8.0.0877: using CTRL-\ CTRL-N in terminal is inconsistent

Problem:    Using CTRL-\ CTRL-N in terminal is inconsistent.
Solution:   Stay in Normal mode.
diff --git a/src/main.c b/src/main.c
index 615858b..4b787a3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1356,13 +1356,13 @@
 	else
 	{
 #ifdef FEAT_TERMINAL
-	    if (term_use_loop(TRUE)
+	    if (term_use_loop()
 		    && oa.op_type == OP_NOP && oa.regname == NUL
 		    && !VIsual_active)
 	    {
 		/* If terminal_loop() returns OK we got a key that is handled
-		 * in Normal model.  With FAIL the terminal was closed and the
-		 * screen needs to be redrawn. */
+		 * in Normal model.  With FAIL we first need to position the
+		 * cursor and the screen needs to be redrawn. */
 		if (terminal_loop() == OK)
 		    normal_cmd(&oa, TRUE);
 	    }