Only start crash service on Windows.

common/api/lib/crash-reporter.coffee

@@ -22,9 +22,7 @@ class CrashReporter
 
     start = -> binding.start productName, companyName, submitUrl, autoSubmit, ignoreSystemCrashHandler, extra
 
-    if process.platform is 'darwin'
-      start()
-    else
+    if process.platform is 'win32'
       args = [
         "--reporter-url=#{submitUrl}"
         "--application-name=#{productName}"
@@ -34,5 +32,7 @@ class CrashReporter
 
       spawn process.execPath, args, {env, detached: true}
       start()
+    else
+      start()
 
 module.exports = new CrashReporter