[epiphany] ephy-history-service: remove some dangerous g_object_unref() calls

[Claudio Saavedra <csaavedra src gnome org>]

commit dddc036986d7fc8da4ce735ffdccf91c2315f6be
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Thu Sep 6 13:08:47 2012 +0300

    ephy-history-service: remove some dangerous g_object_unref() calls
    
    If there is an error building a statement, the returned value is
    always NULL. Calling g_object_unref() on them will lead to trouble.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683475

 lib/history/ephy-history-service-hosts-table.c  |    2 --
 lib/history/ephy-history-service-urls-table.c   |    2 --
 lib/history/ephy-history-service-visits-table.c |    2 +-
 3 files changed, 1 insertions(+), 5 deletions(-)
---
diff --git a/lib/history/ephy-history-service-hosts-table.c b/lib/history/ephy-history-service-hosts-table.c
index 04be063..0a3aa86 100644
--- a/lib/history/ephy-history-service-hosts-table.c
+++ b/lib/history/ephy-history-service-hosts-table.c
@@ -300,7 +300,6 @@ ephy_history_service_find_host_rows (EphyHistoryService *self, EphyHistoryQuery
   if (error) {
     g_error ("Could not build hosts table query statement: %s", error->message);
     g_error_free (error);
-    g_object_unref (statement);
     return NULL;
   }
   if (query->from > 0) {
@@ -451,7 +450,6 @@ ephy_history_service_delete_host_row (EphyHistoryService *self,
   if (error) {
     g_error ("Could not build urls table query statement: %s", error->message);
     g_error_free (error);
-    g_object_unref (statement);
     return;
   }
 
diff --git a/lib/history/ephy-history-service-urls-table.c b/lib/history/ephy-history-service-urls-table.c
index f0d4451..b37d58f 100644
--- a/lib/history/ephy-history-service-urls-table.c
+++ b/lib/history/ephy-history-service-urls-table.c
@@ -295,7 +295,6 @@ ephy_history_service_find_url_rows (EphyHistoryService *self, EphyHistoryQuery *
   if (error) {
     g_error ("Could not build urls table query statement: %s", error->message);
     g_error_free (error);
-    g_object_unref (statement);
     return NULL;
   }
 
@@ -392,7 +391,6 @@ ephy_history_service_delete_url (EphyHistoryService *self, EphyHistoryURL *url)
   if (error) {
     g_error ("Could not build urls table query statement: %s", error->message);
     g_error_free (error);
-    g_object_unref (statement);
     return;
   }
 
diff --git a/lib/history/ephy-history-service-visits-table.c b/lib/history/ephy-history-service-visits-table.c
index 0beaa23..1b9e5b3 100644
--- a/lib/history/ephy-history-service-visits-table.c
+++ b/lib/history/ephy-history-service-visits-table.c
@@ -155,7 +155,7 @@ ephy_history_service_find_visit_rows (EphyHistoryService *self, EphyHistoryQuery
   if (error) {
     g_error ("Could not build visits table query statement: %s", error->message);
     g_error_free (error);
-    g_object_unref (statement);
+    return NULL;
   }
 
   if (query->from >= 0) {