patch 8.2.4610: some conditions are always true

Problem:    Some conditions are always true.
Solution:   Remove the useless conditions. (closes #9993)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 13cde84..be358453 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -2411,8 +2411,7 @@
 	if (curbufIsChanged())
 #endif
 	{
-	    if (other)
-		--no_wait_return;
+	    --no_wait_return;
 	    no_write_message();
 	    retval = GETFILE_NOT_WRITTEN;	// file has been changed
 	    goto theend;