use getCore().getBuiltins() instead of getCore().lookupBuiltinModule(BUILTINS)

Author: tomasstupka

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextCEvalBuiltins.java

@@ -139,7 +139,7 @@ public Object release(@Cached GetDictIfExistsNode getDictNode,
                         @Cached TransformExceptionToNativeNode transformExceptionToNativeNode,
                         @Cached GetNativeNullNode getNativeNullNode) {
             try {
-                PythonModule cext = getContext().getCore().lookupBuiltinModule(BUILTINS);
+                PythonModule cext = getCore().getBuiltins();
                 return getDictNode.execute(cext);
             } catch (PException e) {
                 transformExceptionToNativeNode.execute(e);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/cext/PythonCextPythonRunBuiltins.java

@@ -97,7 +97,7 @@ public Object run(VirtualFrame frame, Object source, Object stype, Object global
                         @Cached TransformExceptionToNativeNode transformExceptionToNativeNode,
                         @Cached GetNativeNullNode getNativeNull) {
             try {
-                PythonModule builtins = getContext().getCore().lookupBuiltinModule(BUILTINS);
+                PythonModule builtins = getCore().getBuiltins();
                 Object compileCallable = lookupNode.execute(frame, builtins, COMPILE);
                 Object code = callNode.execute(frame, compileCallable, source, stype, stype);
                 Object execCallable = lookupNode.execute(frame, builtins, EXEC);