patch 8.2.2492: command line buffer name cannot be translated

Problem:    Command line buffer name cannot be translated.
Solution:   Add _(). (Gabriel Dupras, closes #7812)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index faa56e1..2be8156 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -4219,7 +4219,7 @@
     }
 
     apply_autocmds(EVENT_BUFFILEPRE, NULL, NULL, FALSE, curbuf);
-    (void)setfname(curbuf, (char_u *)"[Command Line]", NULL, TRUE);
+    (void)setfname(curbuf, (char_u *)_("[Command Line]"), NULL, TRUE);
     apply_autocmds(EVENT_BUFFILEPOST, NULL, NULL, FALSE, curbuf);
     set_option_value((char_u *)"bt", 0L, (char_u *)"nofile", OPT_LOCAL);
     curbuf->b_p_ma = TRUE;