Fix missing transfer on few C API function returns

Author: msimacek

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

@@ -127,7 +127,7 @@ protected static boolean checkArgs(Object source, Object globals, Object locals,
         }
     }
 
-    @CApiBuiltin(ret = PyObject, args = {ConstCharPtrAsTruffleString, ConstCharPtrAsTruffleString, Int}, call = Direct)
+    @CApiBuiltin(ret = PyObjectTransfer, args = {ConstCharPtrAsTruffleString, ConstCharPtrAsTruffleString, Int}, call = Direct)
     abstract static class Py_CompileString extends CApiTernaryBuiltinNode {
         @Specialization(guards = {"isString(source)", "isString(filename)"})
         static Object compile(Object source, Object filename, int type,
@@ -146,7 +146,7 @@ static Object fail(Object source, Object filename, Object type,
         }
     }
 
-    @CApiBuiltin(ret = PyObject, args = {ConstCharPtrAsTruffleString, ConstCharPtrAsTruffleString, Int, PY_COMPILER_FLAGS, Int}, call = Direct)
+    @CApiBuiltin(ret = PyObjectTransfer, args = {ConstCharPtrAsTruffleString, ConstCharPtrAsTruffleString, Int, PY_COMPILER_FLAGS, Int}, call = Direct)
     abstract static class Py_CompileStringExFlags extends CApi5BuiltinNode {
         @Specialization(guards = {"isString(source)", "isString(filename)"})
         static Object compile(Object source, Object filename, int type,
@@ -180,7 +180,7 @@ static Object fail(Object source, Object filename, Object type, Object flags, Ob
         }
     }
 
-    @CApiBuiltin(ret = PyObject, args = {ConstCharPtrAsTruffleString, PyObject, Int, PY_COMPILER_FLAGS, Int}, call = Direct)
+    @CApiBuiltin(ret = PyObjectTransfer, args = {ConstCharPtrAsTruffleString, PyObject, Int, PY_COMPILER_FLAGS, Int}, call = Direct)
     abstract static class Py_CompileStringObject extends CApi5BuiltinNode {
         @Specialization(guards = "isString(source)")
         static Object compile(Object source, Object filename, int type,

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

@@ -954,7 +954,7 @@ static PBytes fromObject(Object s,
         }
     }
 
-    @CApiBuiltin(ret = PyObject, args = {CONST_WCHAR_PTR, Py_ssize_t}, call = Direct)
+    @CApiBuiltin(ret = PyObjectTransfer, args = {CONST_WCHAR_PTR, Py_ssize_t}, call = Direct)
     abstract static class PyUnicode_FromWideChar extends CApiBinaryBuiltinNode {
         @Specialization
         Object doInt(Object arr, long size,