Inconsistent Testing

[dhinojosa]

Testing works, but every once in a while, a NullPointerException is thrown by servlet.WriteListener

java.lang.NullPointerException: Cannot invoke "org.apache.catalina.connector.OutputBuffer.setWriteListener(jakarta.servlet.WriteListener)" because "this.ob" is nullte 4s
	at org.apache.catalina.connector.CoyoteOutputStream.setWriteListener(CoyoteOutputStream.java:171)
	at org.http4s.servlet.NonBlockingServletIo.$anonfun$bodyWriter$7(ServletIo.scala:174)
	at delay @ org.http4s.servlet.NonBlockingServletIo.$anonfun$bodyWriter$6(ServletIo.scala:174)

[rossabaker]

I think this is the first http4s-tomcat since http4s/http4s-servlet#50. I suspect we're making a bad assumption there...