[retro-gtk/wip/aplazas/c-port] Fixes

[Adrien Plazas <aplazas src gnome org>]

commit d1338db60be87325b021433e1f8f0a32cc91d464
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue Oct 10 11:33:16 2017 +0200

    Fixes

 retro-gtk/retro-core-descriptor.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/retro-gtk/retro-core-descriptor.c b/retro-gtk/retro-core-descriptor.c
index ea03a85..1de839d 100644
--- a/retro-gtk/retro-core-descriptor.c
+++ b/retro-gtk/retro-core-descriptor.c
@@ -729,8 +729,8 @@ retro_core_descriptor_has_firmware_sha512 (RetroCoreDescriptor  *self,
  * retro_core_descriptor_get_mime_type
  * @self: a #RetroCoreDescriptor
  * @platform: a platform name
- * @length: (out) (nullable): return location for the number of returned strings,
- * or %NULL
+ * @length: (out) (optional): return location for the number of returned
+ * strings, or %NULL
  * @error: return location for a #GError, or %NULL
  *
  * Gets the list of MIME types accepted used by the core for this platform.
@@ -757,15 +757,15 @@ retro_core_descriptor_get_mime_type (RetroCoreDescriptor  *self,
  * retro_core_descriptor_get_firmwares
  * @self: a #RetroCoreDescriptor
  * @platform: a platform name
- * @length: (out) (nullable): return location for the number of returned
+ * @length: (out) (optional): return location for the number of returned
  * strings, or %NULL
  * @error: return location for a #GError, or %NULL
  *
  * Gets the list of firmwares used by the core for this platform.
  *
- * Returns: (array zero-terminated=1 length=length) (element-type utf8)
- * (transfer full): a %NULL-terminated string array or %NULL, the array should be
- * freed with g_strfreev()
+ * Returns: (array zero-terminated=1 length=length) (element-type utf8) (transfer full):
+ * a %NULL-terminated string array or %NULL, the array should be freed with
+ * g_strfreev()
  */
 gchar **
 retro_core_descriptor_get_firmwares (RetroCoreDescriptor  *self,