[glom] DbUtils::add_standard_tables(): Fix a typo.

[Murray Cumming <murrayc src gnome org>]

commit a7c6fb4bfedd60de078e283e8e76d4bd1357b860
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Jul 6 20:47:56 2015 +0200

    DbUtils::add_standard_tables(): Fix a typo.
    
    This was a regression in commit 24350bba237d9436d601cf1bf13b242043e8c1aa

 glom/libglom/db_utils.cc |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/glom/libglom/db_utils.cc b/glom/libglom/db_utils.cc
index a3ec7b0..0dbc5d2 100644
--- a/glom/libglom/db_utils.cc
+++ b/glom/libglom/db_utils.cc
@@ -496,9 +496,9 @@ bool add_standard_tables(const Document* document)
           Glib::RefPtr<Gnome::Gda::SqlBuilder> builderUpdate = 
Gnome::Gda::SqlBuilder::create(Gnome::Gda::SQL_STATEMENT_UPDATE);
           builderUpdate->set_table(GLOM_STANDARD_TABLE_PREFS_TABLE_NAME);
           builderUpdate->add_field_value(GLOM_STANDARD_TABLE_PREFS_FIELD_NAME, system_name);
-          builderUpdate->set_where(builderAdd->add_cond(Gnome::Gda::SQL_OPERATOR_TYPE_EQ,
-                                               builderAdd->add_field_id(GLOM_STANDARD_TABLE_PREFS_FIELD_ID, 
GLOM_STANDARD_TABLE_PREFS_TABLE_NAME),
-                                               builderAdd->add_expr(1)));
+          builderUpdate->set_where(builderUpdate->add_cond(Gnome::Gda::SQL_OPERATOR_TYPE_EQ,
+                                               
builderUpdate->add_field_id(GLOM_STANDARD_TABLE_PREFS_FIELD_ID, GLOM_STANDARD_TABLE_PREFS_TABLE_NAME),
+                                               builderUpdate->add_expr(1)));
           if(!query_execute(builderUpdate))
             std::cerr << G_STRFUNC << ": UPDATE failed." << std::endl;
         }