[connectionagent] delay setting tethering enabled after power on.

This fixes the case when wifi needs to be powered on, and there are no
known services in range. For some reason, setting the technology to be
tethering enabled does not work until it is delayed.

connd/qconnectionagent.cpp

@@ -496,13 +496,16 @@ void QConnectionAgent::setup()
 void QConnectionAgent::technologyPowerChanged(bool powered)
 {
     NetworkTechnology *tech = static_cast<NetworkTechnology *>(sender());
-    qDebug() << tech->name() << powered;
+    if (tech->type() != "wifi")
+        return;
+    qDebug() << tetheringWifiTech->name() << powered;
 
-    if (netman && tech->type() == "wifi" && powered && delayedTethering) {
-        tech->setTethering(true);
+    if (netman && powered && delayedTethering) {
+        // wifi tech might not be ready, so delay this
+        QTimer::singleShot(1000,this,SLOT(setWifiTetheringEnabled()));
     }
 
-    if (!delayedTethering && tech->type() == "wifi") {
+    if (!delayedTethering) {
         if (!powered) {
             removeAllTypes("wifi"); //dont wait for connman, he's too slow at this
             QString bestService = findBestConnectableService();
@@ -869,3 +872,11 @@ void QConnectionAgent::stopTethering()
     }
     Q_EMIT tetheringFinished(false);
 }
+
+void QConnectionAgent::setWifiTetheringEnabled()
+{
+    if (tetheringWifiTech) {
+        qDebug() << "set tethering";
+        tetheringWifiTech->setTethering(delayedTethering);
+    }
+}

connd/qconnectionagent.h

@@ -145,6 +145,7 @@ private slots:
     void servicesChanged();
 
     void openConnectionDialog(const QString &type);
+    void setWifiTetheringEnabled();
 };
 
 #endif // QCONNECTIONAGENT_H