Revert "LNjSCHEME: revert change breaking things"

This reverts commit c8ddac7.

It actually never broke anything

Author: 0-8-15

modules/lnjscheme/ANDROID_java_oncreate

@@ -1,5 +1,7 @@
 /* LNjScheme -*- mode: java; c-basic-offset: 2; -*- */
 
+if(LNjSchemeSession==null) { // closed at end of file
+
 LNjSchemeSession = new LNjScheme.Scheme
   (new String[0])
   {
@@ -125,4 +127,6 @@ LNjSchemeEvaluateNoSync
        }}
      )));
 
+}
+
 // eof: LNjScheme