Use has to check if mediaTitle key exists in-case an array is provided, vervallsweg#58

Author: carl34

devicetypes/vervallsweg/cast-web-device.src/cast-web-device.groovy

@@ -349,7 +349,7 @@ def getPresetObject(number) {
     def defaultMediaTitle = "Preset "+number
     logger('debug', "Executing 'playPreset': "+number+", key: "+key+", defaultMediaTitle: "+defaultMediaTitle)
     JSONObject presets = new JSONObject( getDataValue("presetObject") )
-    if(presets.get(key).mediaTitle) {
+    if(presets.get(key).has("mediaTitle")) {
         logger('debug', "getPresetObject() is old preset object")
         presets[key].put( "mediaSubtitle", (presets[key]["mediaSubtitle"]+" - Preset "+number) )