patch 8.1.2258: may get hit-enter prompt after entering a number

Problem:    May get hit-enter prompt after entering a number. (Malcolm Rowe)
Solution:   Put back accidentally deleted lines. (closes #5176)
diff --git a/src/misc1.c b/src/misc1.c
index 74c8eaa..b27c527 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -985,6 +985,8 @@
 	if (msg_row > 0)
 	    cmdline_row = msg_row - 1;
 	need_wait_return = FALSE;
+	msg_didany = FALSE;
+	msg_didout = FALSE;
     }
     else
 	cmdline_row = save_cmdline_row;