test: changing process.exit to return while skipping tests

This patch uses `return` statement to skip the test instead of using
`process.exit` call.

PR-URL: #2109
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>

Author: thefourtheye

test/internet/test-http-https-default-ports.js

@@ -4,7 +4,7 @@ var assert = require('assert');
 
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 var https = require('https');
 

test/internet/test-tls-connnect-cnnic.js

@@ -11,7 +11,7 @@
 var common = require('../common');
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 
 var tls = require('tls');

test/internet/test-tls-connnect-melissadata.js

@@ -5,7 +5,7 @@
 var common = require('../common');
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 
 var tls = require('tls');

test/internet/test-tls-reuse-host-from-socket.js

@@ -4,7 +4,7 @@ var assert = require('assert');
 
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 var tls = require('tls');
 

test/parallel/test-cluster-bind-privileged-port.js

@@ -6,7 +6,7 @@ var net = require('net');
 
 if (process.platform === 'win32') {
   console.log('1..0 # Skipped: not reliable on Windows.');
-  process.exit(0);
+  return;
 }
 
 if (process.getuid() === 0) {

test/parallel/test-cluster-disconnect-unshared-udp.js

@@ -1,7 +1,7 @@
 'use strict';
 if (process.platform === 'win32') {
   console.log('1..0 # Skipped: on windows, because clustered dgram is ENOTSUP');
-  process.exit(0);
+  return;
 }
 
 var cluster = require('cluster');

test/parallel/test-cluster-shared-handle-bind-privileged-port.js

@@ -6,12 +6,12 @@ var net = require('net');
 
 if (process.platform === 'win32') {
   console.log('1..0 # Skipped: not reliable on Windows');
-  process.exit(0);
+  return;
 }
 
 if (process.getuid() === 0) {
   console.log('1..0 # Skipped: as this test should not be run as `root`');
-  process.exit(0);
+  return;
 }
 
 if (cluster.isMaster) {

test/parallel/test-crypto-authenticated.js

@@ -4,7 +4,7 @@ var assert = require('assert');
 
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 var crypto = require('crypto');
 

test/parallel/test-crypto-binary-default.js

@@ -9,7 +9,7 @@ var constants = require('constants');
 
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 var crypto = require('crypto');
 var tls = require('tls');

test/parallel/test-crypto-certificate.js

@@ -4,7 +4,7 @@ var assert = require('assert');
 
 if (!common.hasCrypto) {
   console.log('1..0 # Skipped: missing crypto');
-  process.exit();
+  return;
 }
 var crypto = require('crypto');