Handle errors to prevent panic

Signed-off-by: Cai Zhang <cai.zhang@zilliz.com>

Author: xiaocai2333

arrow/cdata/cdata.go

@@ -407,7 +407,9 @@ func (imp *cimporter) doImportChildren() error {
 		st := imp.dt.(*arrow.StructType)
 		for i, c := range children {
 			imp.children[i].dt = st.Field(i).Type
-			imp.children[i].importChild(imp, c)
+			if err := imp.children[i].importChild(imp, c); err != nil {
+				return err
+			}
 		}
 	case arrow.RUN_END_ENCODED: // import run-ends and values
 		st := imp.dt.(*arrow.RunEndEncodedType)
@@ -428,13 +430,17 @@ func (imp *cimporter) doImportChildren() error {
 		dt := imp.dt.(*arrow.DenseUnionType)
 		for i, c := range children {
 			imp.children[i].dt = dt.Fields()[i].Type
-			imp.children[i].importChild(imp, c)
+			if err := imp.children[i].importChild(imp, c); err != nil {
+				return err
+			}
 		}
 	case arrow.SPARSE_UNION:
 		dt := imp.dt.(*arrow.SparseUnionType)
 		for i, c := range children {
 			imp.children[i].dt = dt.Fields()[i].Type
-			imp.children[i].importChild(imp, c)
+			if err := imp.children[i].importChild(imp, c); err != nil {
+				return err
+			}
 		}
 	}