cast in scalar_at

Signed-off-by: Andrew Duffy <andrew@a10y.dev>

Author: a10y

vortex-array/src/arrays/patched/array.rs

@@ -27,8 +27,6 @@ use crate::stats::ArrayStats;
 use crate::validity::Validity;
 
 /// An array that partially "patches" another array with new values.
-///
-/// Patched arrays implement the set of nodes that do this instead here...I think?
 #[derive(Debug, Clone)]
 pub struct PatchedArray {
     /// The inner array that is being patched. This is the zeroth child.

vortex-array/src/arrays/patched/vtable/operations.rs

@@ -28,7 +28,7 @@ impl OperationsVTable<Patched> for Patched {
         //  be slower.
         for (index, patch_index) in accessor.offsets_iter(chunk, lane) {
             if patch_index == chunk_index {
-                return array.values.scalar_at(index);
+                return array.values.scalar_at(index)?.cast(array.dtype());
             }
         }