Fix handling of custom_water_still.png without custom_water_flowing.png
Fix handling of custom_water_still.png without custom_water_flowing.png
KovuTheHusky/DynmapCore,instantdelay/DynmapCore,webbukkit/DynmapCore,mikeprimm/DynmapCore,mikeprimm/DynmapCore,instantdelay/DynmapCore,mikeprimm/DynmapCore,KovuTheHusky/DynmapCore,webbukkit/DynmapCore,instantdelay/DynmapCore,instantdelay/DynmapCore,KovuTheHusky/DynmapCore,KovuTheHusky/DynmapCore,webbukkit/DynmapCore,mikeprimm/DynmapCore,webbukkit/DynmapCore