Error when processing an undefined or null response header from body

[jormaechea]

In this line:

serverless-offline/src/ApiGateway.js

Lines 660 to 663 in 88fecc4

	headerValue = (valueArray[3]
	? jsonPath(result, valueArray.slice(3).join('.'))
	: result
	).toString();

If the path does not exist, jsonPath() returns undefined which then throws by calling undefined.toString().

This should be handled properly.