Ninja fix missing IDEA sun.rmi.transport.tcp compiler export after CASSANDRA-18511
diff --git a/build.xml b/build.xml
index 3e0a8e9..3eaf723 100644
--- a/build.xml
+++ b/build.xml
@@ -1811,7 +1811,7 @@
       <echo file=".idea/compiler.xml"><![CDATA[<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="JavacSettings">
-    <option name="ADDITIONAL_OPTIONS_STRING" value="--add-exports java.rmi/sun.rmi.registry=ALL-UNNAMED" />
+    <option name="ADDITIONAL_OPTIONS_STRING" value="--add-exports java.rmi/sun.rmi.registry=ALL-UNNAMED --add-exports java.rmi/sun.rmi.transport.tcp=ALL-UNNAMED" />
   </component>
 </project>]]></echo>
       <echo>"IDE configuration updated for use with JDK11"</echo>