Use non conflicting fixed port.

Author: rolftimmermans

test/unit/context-process-exit-test.ts

@@ -44,7 +44,7 @@ describe("context process exit", function() {
       const {stderr} = await createProcess(() => {
         zmq.context.blocky = true
         const socket1 = new zmq.Dealer({linger: 600})
-        socket1.connect("tcp://127.0.0.1:6789")
+        socket1.connect("tcp://127.0.0.1:4567")
         socket1.send(null)
       })
 
@@ -66,7 +66,7 @@ describe("context process exit", function() {
       const {stderr} = await createProcess(() => {
         zmq.context.blocky = false
         const socket1 = new zmq.Dealer({linger: 600})
-        socket1.connect("tcp://127.0.0.1:6789")
+        socket1.connect("tcp://127.0.0.1:4567")
         socket1.send(null)
       })
 
@@ -81,7 +81,7 @@ describe("context process exit", function() {
       const {stderr} = await createProcess(() => {
         zmq.context.blocky = true
         const socket1 = new zmq.Dealer({linger: 100})
-        socket1.connect("tcp://127.0.0.1:6789")
+        socket1.connect("tcp://127.0.0.1:4567")
         socket1.send(null)
       })