small fix

src/de/tudarmstadt/informatik/hostage/ui2/fragment/ThreatMapFragment.java

@@ -80,7 +80,7 @@ public class ThreatMapFragment extends Fragment implements GoogleMap.OnInfoWindo
 		RecordOverviewFragment recordOverviewFragment = (RecordOverviewFragment)MainActivity.getInstance().getCurrentFragment();
 		if (recordOverviewFragment != null) {
 			String ssid = mMarkerIDToSSID.get(marker.getId());
-			recordOverviewFragment.showDetailsForSSID(ssid);
+			recordOverviewFragment.showDetailsForSSID(this.getActivity() ,ssid);
 		}
 	}