`info`: Tile Report fails if GOL is empty

[clarisma]

• Run gol info -t on empty gol:

Internal error: Index: 1 Size: 1
java.lang.IndexOutOfBoundsException: Index: 1 Size: 1
at org.eclipse.collections.impl.list.mutable.primitive.LongArrayList.newIndexOutOfBoundsException(LongArrayList.java:137)
at org.eclipse.collections.impl.list.mutable.primitive.LongArrayList.get(LongArrayList.java:132)
at com.geodesk.gol.info.TileReport.createReport(TileReport.java:148)
at com.geodesk.gol.info.TileReport.(TileReport.java:52)
at com.geodesk.gol.InfoCommand.performWithLibrary(InfoCommand.java:77)
at com.geodesk.gol.GolCommand.perform(GolCommand.java:123)
at com.clarisma.common.cli.Application.run(Application.java:98)
at com.geodesk.gol.GolTool.main(GolTool.java:58)