better comment

sugar.go

@@ -349,14 +349,14 @@ func (s *SugaredLogger) sweetenFields(args []interface{}) []Field {
 			continue
 		}
 
-		// If it is an error.
+		// If it is an error, consume it and move on.
 		if err, ok := args[i].(error); ok {
 			fields = append(fields, Error(err))
 			i++
 			continue
 		}
 
-		// If it is not a singular error, make sure this element isn't a dangling key.
+		// Make sure this element isn't a dangling key.
 		if i == len(args)-1 {
 			s.base.Error(_oddNumberErrMsg, Any("ignored", args[i]))
 			break

sugar_test.go

@@ -201,8 +201,8 @@ func TestSugarStructuredLogging(t *testing.T) {
 	// Common to all test cases.
 	err := errors.New("qux")
 	context := []interface{}{"foo", "bar"}
-	extra := []interface{}{"baz", false, err}
-	expectedFields := []Field{String("foo", "bar"), Bool("baz", false), Error(err)}
+	extra := []interface{}{err, "baz", false}
+	expectedFields := []Field{String("foo", "bar"), Error(err), Bool("baz", false)}
 
 	for _, tt := range tests {
 		withSugar(t, DebugLevel, nil, func(logger *SugaredLogger, logs *observer.ObservedLogs) {