fix test and don't print None

Author: timfel

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/interop/JavaInteropTest.java

@@ -238,7 +238,7 @@ public void accessSuitePy() throws IOException {
             }
         }
         assertNotNull("Dacapo found", dacapo);
-        assertEquals("'e39957904b7e79caf4fa54f30e8e4ee74d4e9e37'", dacapo.getMember("sha1").toString());
+        assertEquals("e39957904b7e79caf4fa54f30e8e4ee74d4e9e37", dacapo.getMember("sha1").toString());
     }
 
     public static class ForeignObjectWithOOInvoke implements TruffleObject {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/control/TopLevelExceptionHandler.java

@@ -134,6 +134,9 @@ public Object execute(VirtualFrame frame) {
 
     @TruffleBoundary
     private void printResult(Object result) {
+        if (result instanceof PNone) {
+            return;
+        }
         OutputStream out = getCurrentContext(PythonLanguage.class).getStandardOut();
         String stringResult = callReprNode.executeObject(result).toString();
         try {