[mutter] keybindings: Small code cleanup

[Carlos Garnacho <carlosg src gnome org>]

commit c53aa89098e4369b13e87f9c5f5ab173f0b40ef4
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Thu May 16 10:58:27 2019 +0200

    keybindings: Small code cleanup
    
    Reuse the name we just set to insert in the hash table, that avoids
    duplicating the string.
    
    Suggested-by: Carlos Garnacho <carlosg gnome org>
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/453

 src/core/keybindings.c | 8 ++++----
 src/core/prefs.c       | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index 8e73ce921..4e8493211 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -4455,26 +4455,26 @@ meta_display_init_keys (MetaDisplay *display)
   handler->name = g_strdup ("overlay-key");
   handler->flags = META_KEY_BINDING_BUILTIN;
 
-  g_hash_table_insert (key_handlers, g_strdup ("overlay-key"), handler);
+  g_hash_table_insert (key_handlers, g_strdup (handler->name), handler);
 
   handler = g_new0 (MetaKeyHandler, 1);
   handler->name = g_strdup ("locate-pointer-key");
   handler->flags = META_KEY_BINDING_BUILTIN;
 
-  g_hash_table_insert (key_handlers, g_strdup ("locate-pointer-key"), handler);
+  g_hash_table_insert (key_handlers, g_strdup (handler->name), handler);
 
   handler = g_new0 (MetaKeyHandler, 1);
   handler->name = g_strdup ("iso-next-group");
   handler->flags = META_KEY_BINDING_BUILTIN;
 
-  g_hash_table_insert (key_handlers, g_strdup ("iso-next-group"), handler);
+  g_hash_table_insert (key_handlers, g_strdup (handler->name), handler);
 
   handler = g_new0 (MetaKeyHandler, 1);
   handler->name = g_strdup ("external-grab");
   handler->func = handle_external_grab;
   handler->default_func = handle_external_grab;
 
-  g_hash_table_insert (key_handlers, g_strdup ("external-grab"), handler);
+  g_hash_table_insert (key_handlers, g_strdup (handler->name), handler);
 
   external_grabs = g_hash_table_new_full (g_str_hash, g_str_equal,
                                           NULL,
diff --git a/src/core/prefs.c b/src/core/prefs.c
index 9f11a2842..ca503bc3f 100644
--- a/src/core/prefs.c
+++ b/src/core/prefs.c
@@ -1728,7 +1728,7 @@ init_bindings (void)
   pref->combos = g_slist_prepend (pref->combos, &overlay_key_combo);
   pref->builtin = 1;
 
-  g_hash_table_insert (key_bindings, g_strdup ("overlay-key"), pref);
+  g_hash_table_insert (key_bindings, g_strdup (pref->name), pref);
 
   pref = g_new0 (MetaKeyPref, 1);
   pref->name = g_strdup ("locate-pointer-key");
@@ -1736,7 +1736,7 @@ init_bindings (void)
   pref->combos = g_slist_prepend (pref->combos, &locate_pointer_key_combo);
   pref->builtin = 1;
 
-  g_hash_table_insert (key_bindings, g_strdup ("locate-pointer-key"), pref);
+  g_hash_table_insert (key_bindings, g_strdup (pref->name), pref);
 }
 
 static gboolean