From e18e08c2f1913bf07cff5cbe3635d34f06fb7fc1 Mon Sep 17 00:00:00 2001
From: Marco Martin <notmart@gmail.com>
Date: Thu, 15 Sep 2011 21:05:06 +0200
Subject: [PATCH] don't cache empty sources

---
 declarativeimports/core/datasource.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/declarativeimports/core/datasource.cpp b/declarativeimports/core/datasource.cpp
index a5bc4aca8..f67a28460 100644
--- a/declarativeimports/core/datasource.cpp
+++ b/declarativeimports/core/datasource.cpp
@@ -185,7 +185,11 @@ QStringList DataSource::keysForSource(const QString &source) const
 Plasma::Service *DataSource::serviceForSource(const QString &source)
 {
     if (!m_services.contains(source)) {
-        m_services[source] = m_dataEngine->serviceForSource(source);
+        Plasma::Service *service = m_dataEngine->serviceForSource(source);
+        if (!service) {
+            return 0;
+        }
+        m_services[source] = service;
     }
 
     return m_services.value(source);