Launcher: fix some warnings from QML

src/GUI/AircraftDetailsView.qml

@@ -135,14 +135,21 @@ Rectangle {
                 text: qsTr("Ratings:")
             }
 
+
             AircraftRating {
                 title: qsTr("Flight model")
-                value: aircraft.ratings[0]
+                Binding on value {
+                    when: aircraft.ratings != undefined
+                    value: aircraft.ratings[0]
+                }
             }
 
             AircraftRating {
                 title: qsTr("Systems")
-                value: aircraft.ratings[1]
+                Binding on value {
+                    when: aircraft.ratings != undefined
+                    value: aircraft.ratings[1]
+                }
             }
 
             Item {
@@ -152,12 +159,18 @@ Rectangle {
 
             AircraftRating {
                 title: qsTr("Cockpit")
-                value: aircraft.ratings[2]
+                Binding on value {
+                    when: aircraft.ratings != undefined
+                    value: aircraft.ratings[2]
+                }
             }
 
             AircraftRating {
                 title: qsTr("Exterior")
-                value: aircraft.ratings[3]
+                Binding on value {
+                    when: aircraft.ratings != undefined
+                    value: aircraft.ratings[3]
+                }
             }
         }
 

src/GUI/LocalAircraftCache.hxx

@@ -120,7 +120,8 @@ public:
         PackageInstalled,
         PackageUpdateAvailable,
         PackageQueued,
-        PackageDownloading
+        PackageDownloading,
+        NotPackaged
     };
 
     Q_ENUMS(PackageStatus)

src/GUI/QmlAircraftInfo.cxx

@@ -271,7 +271,7 @@ QVariant QmlAircraftInfo::status() const
         return packageAircraftStatus(_package);
     }
 
-    return {};
+    return LocalAircraftCache::AircraftOk;
 }
 
 QString QmlAircraftInfo::minimumFGVersion() const
@@ -401,7 +401,7 @@ QVariant QmlAircraftInfo::installStatus() const
         }
     }
 
-    return {};
+    return LocalAircraftCache::NotPackaged;
 }
 
 PackageRef QmlAircraftInfo::packageRef() const