Fix a segfault

In the function "cDetailView::InitiateView" there was a
segfault when the "call->type = tNone".

detailview.c

@@ -32,6 +32,8 @@ void cDetailView::InitiateView(void) {
             view = new cMovieView(call.movieId);
         } else if (call.type == tSeries) {
             view = new cSeriesView(call.seriesId, call.episodeId);
+        } else {
+            view = new cEPGView();
         }
     } else {
         view = new cEPGView();