Fix ex for fluid height

pom.xml

@@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>bytecode.ninja</groupId>
 	<artifactId>Iris</artifactId>
-	<version>1.0.23</version>
+	<version>1.0.24</version>
 	<name>Iris</name>
 	<properties>
 		<skip.copy>false</skip.copy>

src/main/java/com/volmit/iris/gen/TopographicTerrainProvider.java

@@ -722,6 +722,11 @@ public abstract class TopographicTerrainProvider extends ParallelTerrainProvider
 
 	public int getFluidHeight()
 	{
+		if(getDimension() == null)
+		{
+			return 63;
+		}
+
 		return getDimension().getFluidHeight();
 	}