Fix sublimate crashes when Team.infiniteResources is true (#6931)

core/src/mindustry/world/blocks/defense/turrets/ContinuousLiquidTurret.java

@@ -83,6 +83,11 @@ public class ContinuousLiquidTurret extends ContinuousTurret{
             return ammoTypes.get(liquids.current());
         }
 
+        @Override
+        public boolean hasAmmo(){
+            return ammoTypes.get(liquids.current()) != null && liquids.currentAmount() >= 1f / ammoTypes.get(liquids.current()).ammoMultiplier;
+        }
+
         @Override
         public boolean acceptItem(Building source, Item item){
             return false;