Merge pull request #130 from umireon/sysinfo-macosx-illegal-nullptr

AUTHORS

@@ -17,6 +17,7 @@ Evgeny Safronov <division494@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
 Google Inc.
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Kaito Udagawa <umireon@gmail.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>

CONTRIBUTORS

@@ -31,6 +31,7 @@ Eugene Zhuk <eugene.zhuk@gmail.com>
 Evgeny Safronov <division494@gmail.com>
 Felix Homann <linuxaudio@showlabor.de>
 JianXiong Zhou <zhoujianxiong2@gmail.com>
+Kaito Udagawa <umireon@gmail.com>
 Lei Xu <eddyxu@gmail.com>
 Matt Clarkson <mattyclarkson@gmail.com>
 Oleksandr Sochka <sasha.sochka@gmail.com>

src/sysinfo.cc

@@ -267,7 +267,7 @@ void InitializeSystemInfo() {
   int num_cpus = 0;
   size_t size = sizeof(num_cpus);
   int numcpus_name[] = {CTL_HW, HW_NCPU};
-  if (::sysctl(numcpus_name, arraysize(numcpus_name), &num_cpus, &size, 0, 0) ==
+  if (::sysctl(numcpus_name, arraysize(numcpus_name), &num_cpus, &size, nullptr, 0) ==
           0 &&
       (size == sizeof(num_cpus)))
     cpuinfo_num_cpus = num_cpus;