[committed][gdb/testsuite] Fix layout next/prev/regs help message

[Tom de Vries <tdevries@suse.de>]

Hi,

With test-case gdb.gdb/unittest.exp, I run into:
...
(gdb) maintenance selftest^M
   ...
Running selftest help_doc_invariants.^M
help doc broken invariant: command 'layout next' help doc first line is \
  not terminated with a '.' character^M
help doc broken invariant: command 'layout prev' help doc first line is \
  not terminated with a '.' character^M
help doc broken invariant: command 'layout regs' help doc first line is \
  not terminated with a '.' character^M
Self test failed: self-test failed at help-doc-selftests.c:95^M
...

Fix this by adding the missing '.' character.

Build and reg-tested on x86_64-linux.

Committed to trunk.

Thanks,
- Tom

[gdb/testsuite] Fix layout next/prev/regs help message

gdb/ChangeLog:

2020-02-24  Tom de Vries  <tdevries@suse.de>

	* tui/tui-layout.c (_initialize_tui_layout): Fix help messages for
	commands layout next/prev/regs.

---
 gdb/tui/tui-layout.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gdb/tui/tui-layout.c b/gdb/tui/tui-layout.c
index b2c47c018c..9014889a76 100644
--- a/gdb/tui/tui-layout.c
+++ b/gdb/tui/tui-layout.c
@@ -1044,13 +1044,13 @@ Usage: layout prev | next | LAYOUT-NAME"),
 		  &layout_list, "layout ", 0, &cmdlist);
 
   add_cmd ("next", class_tui, tui_next_layout_command,
-	   _("Apply the next TUI layout"),
+	   _("Apply the next TUI layout."),
 	   &layout_list);
   add_cmd ("prev", class_tui, tui_prev_layout_command,
-	   _("Apply the previous TUI layout"),
+	   _("Apply the previous TUI layout."),
 	   &layout_list);
   add_cmd ("regs", class_tui, tui_regs_layout_command,
-	   _("Apply the TUI register layout"),
+	   _("Apply the TUI register layout."),
 	   &layout_list);
 
   add_cmd ("new-layout", class_tui, tui_new_layout_command,