small adaption for consistency

lbmpy/advanced_streaming/indexing.py

@@ -219,7 +219,7 @@ class NeighbourOffsetArrays(CustomCodeNode):
     def _offset_symbols(dim):
         return [TypedSymbol(f"neighbour_offset_{d}", create_type(np.int64)) for d in ['x', 'y', 'z'][:dim]]
 
-    def __init__(self, stencil, offsets_dtype=np.int32):
+    def __init__(self, stencil, offsets_dtype=np.int64):
         offsets_dtype = create_type(offsets_dtype)
         dim = len(stencil[0])