must copy wheel to olddir when -w flag is not given

python/install.py

@@ -105,8 +105,8 @@ os.system(sys.executable + ' makewheel.py')
 for wheel in glob.glob('lammps-*.whl'):
   if args.wheeldir:
     shutil.copy(wheel, args.wheeldir)
-
-print('wheel = ', wheel)
+  else:
+    shutil.copy(wheel, olddir)
 
 # remove temporary folders and files
 os.chdir(olddir)