Fix compile with MSVC

src/core/commandlineoptions.cpp

@@ -22,7 +22,9 @@
 #include "version.h"
 
 #include <cstdlib>
-#include <getopt.h>
+#ifndef _MSC_VER
+#  include <getopt.h>
+#endif
 #include <iostream>
 #include <type_traits>
 
@@ -119,6 +121,7 @@ void CommandlineOptions::RemoveArg(const QString &starts_with, int count) {
 
 bool CommandlineOptions::Parse() {
 
+#ifndef _MSC_VER  // TODO: Consider QCommandLineOption.
   static const struct option kOptions[] = {
       {"help", no_argument, nullptr, 'h'},
       {"play", no_argument, nullptr, 'p'},
@@ -319,6 +322,8 @@ bool CommandlineOptions::Parse() {
     }
   }
 
+  #endif  // _MSC_VER
+
   return true;
 
 }