[Mac] Release the mach_host_self() Mach port when done with it

nspr/pr/src/misc/prsystem.c

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "primpl.h"
 #include "prsystem.h"
 #include "prprf.h"
 #include "prlong.h"
 
@@ skipping 15 matching lines @@
 #if defined(BSDI) || defined(FREEBSD) || defined(NETBSD) \
     || defined(OPENBSD) || defined(DARWIN)
 #define _PR_HAVE_SYSCTL
 #include <sys/param.h>
 #include <sys/sysctl.h>
 #endif
 
 #if defined(DARWIN)
 #include <mach/mach_init.h>
 #include <mach/mach_host.h>
+#include <mach/mach_port.h>
 #endif
 
 #if defined(HPUX)
 #include <sys/mpctl.h>
 #include <sys/pstat.h>
 #endif
 
 #if defined(XP_UNIX)
 #include <unistd.h>
 #include <sys/utsname.h>
@@ skipping 244 matching lines @@
 
 #elif defined(HPUX)
 
     struct pst_static info;
     int result = pstat_getstatic(&info, sizeof(info), 1, 0);
     if (result == 1)
         bytes = (PRUint64) info.physical_memory * info.page_size;
 
 #elif defined(DARWIN)
 
+    mach_port_t mach_host = mach_host_self();
+
     struct host_basic_info hInfo;
     mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
 
-    int result = host_info(mach_host_self(),
+    int result = host_info(mach_host,
                            HOST_BASIC_INFO,
                            (host_info_t) &hInfo,
                            &count);
+    mach_port_deallocate(mach_task_self(), mach_host);
     if (result == KERN_SUCCESS)
         bytes = hInfo.max_mem;
 
 #elif defined(WIN32)
 
     MEMORYSTATUSEX memStat;
     memStat.dwLength = sizeof(memStat);
     if (GlobalMemoryStatusEx(&memStat))
         bytes = memStat.ullTotalPhys;
 
@@ skipping 19 matching lines @@
     }
 
 #else
 
     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
 
 #endif
 
     return bytes;
 } /* end PR_GetPhysicalMemorySize() */