message: Prevent negative number of turns required for next culture level
diff: @@ -4564,7 +4564,7 @@ class CvMainInterface:
  if CityScreenOpt.isShowCultureTurns() and iRate > 0:
  iCultureTimes100 = pHeadSelectedCity.getCultureTimes100(pHeadSelectedCity.getOwner())
  iCultureLeftTimes100 = 100 * pHeadSelectedCity.getCultureThreshold() - iCultureTimes100
  - szBuffer += u" " + localText.getText("INTERFACE_CITY_TURNS", (((iCultureLeftTimes100 + iRate - 1) / iRate),))
  + szBuffer += u" " + localText.getText("INTERFACE_CITY_TURNS", ((max(1, iCultureLeftTimes100 + iRate - 1) / iRate),))
  # BUG - Culture Turns - end
  screen.setLabel( "CultureText", "Background", szBuffer, CvUtil.FONT_CENTER_JUSTIFY, 125, yResolution - 184, -1.3, FontTypes.GAME_FONT, WidgetTypes.WIDGET_GENERAL, -1, -1 )
  