minor cleanups

Author: lukasstadler

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/MarshalModuleBuiltins.java

@@ -290,7 +290,6 @@ public void marshal(Object v, int version, int depth, DataOutputStream buffer) {
                     }
                 }
             } catch (IOException e) {
-
                 throw raise(ValueError, ErrorMessages.WAS_NOT_POSSIBLE_TO_MARSHAL_P, v);
             }
         }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/PRootNode.java

@@ -213,7 +213,6 @@ public final byte[] getCode() {
 
     @TruffleBoundary
     private byte[] extractCode() {
-        assert code == null;
         if (this instanceof PClosureRootNode) {
             return PythonLanguage.getCore().getSerializer().serialize(this);
         }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/util/BadOPCodeNode.java

@@ -53,12 +53,13 @@
 
 public class BadOPCodeNode extends PRootNode {
 
-    private String name = "<invalid code>";
+    private final String name;
 
     @CompilationFinal private TruffleLanguage.ContextReference<PythonContext> context;
 
     public BadOPCodeNode(TruffleLanguage<?> language) {
         super(language);
+        this.name = "<invalid code>";
     }
 
     public BadOPCodeNode(TruffleLanguage<?> language, String name) {
@@ -93,8 +94,4 @@ public boolean isPythonInternal() {
     public String getName() {
         return name;
     }
-
-    public void setName(String name) {
-        this.name = name;
-    }
 }

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/parser/sst/SerializationUtils.java

@@ -53,7 +53,7 @@ public class SerializationUtils {
     // changed from string to objectsand we serialized only string frame slots. This version is able
     // serialized the return and free__class__ slots again. The tmp slots are not serialized, we
     // don't need them.
-    // version 12 - don't put source into serialized bytecode
+    // version 12 - changes needed for AST sharing
 
     public static byte VERSION = 12;