errcheck corrected as done in previous code

Author: KaushikiAnand

.golangci.yml

@@ -3,4 +3,4 @@ linters:
    - errcheck
  disable:
    - unused
-output_format: colored-line-number
+output_format: colored-line-number

request.go

@@ -454,10 +454,10 @@ func unmarshalNode(data *Node, model reflect.Value, included *map[string]*Node)
 				buf := bytes.NewBuffer(nil)
 
 				if err := json.NewEncoder(buf).Encode(data.Relationships[args[1]]); err != nil {
-					return err
+					er = err
 				}
 				if err := json.NewDecoder(buf).Decode(relationship); err != nil {
-					return err
+					er = err
 				}
 
 				data := relationship.Data
@@ -488,7 +488,7 @@ func unmarshalNode(data *Node, model reflect.Value, included *map[string]*Node)
 				buf := bytes.NewBuffer(nil)
 				relDataStr := data.Relationships[args[1]]
 				if err := json.NewEncoder(buf).Encode(relDataStr); err != nil {
-					return err
+					er = err
 				}
 
 				isExplicitNull := false