Remove unnecessary returns

src/org/fdroid/fdroid/AppDetails.java

@@ -609,7 +609,6 @@ public class AppDetails extends ListActivity {
                         @Override
                         public void onClick(DialogInterface dialog,
                                 int whichButton) {
-                            return;
                         }
                     });
             AlertDialog alert = ask_alrt.create();
@@ -822,7 +821,6 @@ public class AppDetails extends ListActivity {
                         @Override
                         public void onClick(DialogInterface dialog,
                                 int whichButton) {
-                            return;
                         }
                     });
             AlertDialog alert = ask_alrt.create();

src/org/fdroid/fdroid/DB.java

@@ -1145,7 +1145,6 @@ public class DB {
         Log.d("FDroid", "AppUpdate: " + updateApps.size()
                 + " apps on completion.");
         updateApps = null;
-        return;
     }
 
     // Called instead of endUpdate if the update failed.

src/org/fdroid/fdroid/FDroid.java

@@ -251,7 +251,6 @@ public class FDroid extends FragmentActivity {
                             @Override
                             public void onClick(DialogInterface dialog,
                                     int whichButton) {
-                                return;
                             }
                         });
                 AlertDialog alert = ask_alrt.create();

src/org/fdroid/fdroid/ManageRepo.java

@@ -290,7 +290,6 @@ public class ManageRepo extends ListActivity {
                     public void onClick(DialogInterface dialog, int which) {
                         setResult(Activity.RESULT_CANCELED);
                         finish();
-                        return;
                     }
                 });
         alrt.show();
@@ -410,7 +409,6 @@ public class ManageRepo extends ListActivity {
                         @Override
                         public void onClick(DialogInterface dialog,
                                 int whichButton) {
-                            return;
                         }
                     });
             AlertDialog alert = builder.create();