Hotfix backend iterator and identity out init

Author: roaffix

arrayfire_wrapper/_backend.py

@@ -115,7 +115,7 @@ class BackendType(enum.Enum):  # TODO change name - avoid using _backend_type -
 
     def __iter__(self) -> Iterator:
         # NOTE cpu comes last because we want to keep this order priorty during backend initialization
-        return iter((self.unified, self.cuda, self.opencl, self.cpu))
+        return iter((self.unified, self.cuda, self.oneapi, self.opencl, self.cpu))
 
 
 class Backend:

arrayfire_wrapper/lib/create_and_modify_array/create_array/identity.py

@@ -9,9 +9,9 @@
 
 def identity(shape: tuple[int, ...], dtype: Dtype, /) -> AFArray:
     """
-    source:
+    source: https://arrayfire.org/docs/group__data__func__identity.htm#gabd9b3de6813a9071ff2c6bc34a65589e
     """
-    out = AFArray(0)
+    out = AFArray.create_null_pointer()
     c_shape = CShape(*shape)
     safe_call(_backend.clib.af_identity(ctypes.pointer(out), 4, c_shape.c_array, dtype.c_api_value))
     return out