fix(malwareExecuteScan): add missing error handling (#4536)

Author: CCFenner

pkg/malwarescan/malwarescan.go

@@ -81,6 +81,9 @@ func (c *ClientImpl) sendAPIRequest(method, endpoint string, body io.Reader, hea
 	// sendRequest results in any combination of nil and non-nil response and error.
 	// a response body could even be already closed.
 	response, err := c.HTTPClient.SendRequest(method, c.Host+endpoint, body, header, nil)
+	if err != nil {
+		return errors.Wrap(err, fmt.Sprintf("Failed to send request to MalwareService."))
+	}
 
 	if response.StatusCode != 200 {
 		var scanError ScanError