fix(restart): correctly prevent double npm publish run

bin/semantic-release

@@ -43,7 +43,14 @@ if (~argv._.indexOf('pre')) {
       }
 
       console.log('Publishing v' + result)
-      if (publish) require('../src/restart')()
+      if (publish) require('../src/restart')(function (err) {
+        if (err) {
+          console.log('Something went wrong.')
+          throw err
+        }
+
+        process.exit(1)
+      })
     })
   })
 }
@@ -59,7 +66,6 @@ if (~argv._.indexOf('post')) {
       // see src/restart.js
       if (~npmArgv.indexOf('--semantic-release-rerun')) {
         console.log('Everything is alright :) npm will now print an error message that you can safely ignore.')
-        process.exit(1)
       }
     })
   })