[at-spi2-core] Fix atspi_table_cell_get_column_span prototype

[Mike Gorse <mgorse src gnome org>]

commit c130dd4a8e9aefa65c7cc4f47dfd5041b9330c87
Author: Mike Gorse <mgorse suse com>
Date:   Mon Dec 15 16:01:22 2014 -0500

    Fix atspi_table_cell_get_column_span prototype

 atspi/atspi-table-cell.c |    2 +-
 atspi/atspi-table-cell.h |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/atspi/atspi-table-cell.c b/atspi/atspi-table-cell.c
index 934fb19..9e51031 100644
--- a/atspi/atspi-table-cell.c
+++ b/atspi/atspi-table-cell.c
@@ -63,7 +63,7 @@ get_object_array_and_unref (DBusMessage *reply)
  * or 0 if the cell does not implement this method.
  */
 gint
-atspi_table_cell_get_column_span (AtspiTableCell *obj, GError *error)
+atspi_table_cell_get_column_span (AtspiTableCell *obj, GError **error)
 {
   dbus_int32_t retval = -1;
 
diff --git a/atspi/atspi-table-cell.h b/atspi/atspi-table-cell.h
index 27d234d..8174db8 100644
--- a/atspi/atspi-table-cell.h
+++ b/atspi/atspi-table-cell.h
@@ -46,7 +46,7 @@ struct _AtspiTableCell
   GTypeInterface parent;
 };
 
-gint atspi_table_cell_get_column_span (AtspiTableCell *obj, GError *error);
+gint atspi_table_cell_get_column_span (AtspiTableCell *obj, GError **error);
 
 GPtrArray *atspi_table_cell_get_column_header_cells (AtspiTableCell *obj,
                                                      GError **error);