Update NSPR to 4.12 and NSS to 3.23 on iOS

nspr/pr/src/io/prlog.c

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 
 /* 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 "prenv.h"
 #include "prprf.h"
 #include <string.h>
@@ skipping 220 matching lines @@
                     lm = lm->next;
                 }
             }
             /*found:*/
             count = sscanf(&ev[pos], " , %n", &delta);
             pos += delta;
             if (count == EOF) break;
         }
         PR_SetLogBuffering(isSync ? 0 : bufSize);
 
-#ifdef XP_UNIX
-        if ((getuid() != geteuid()) || (getgid() != getegid())) {
-            return;
-        }
-#endif /* XP_UNIX */
-
-        ev = PR_GetEnv("NSPR_LOG_FILE");
+        ev = PR_GetEnvSecure("NSPR_LOG_FILE");
         if (ev && ev[0]) {
             if (!PR_SetLogFile(ev)) {
 #ifdef XP_PC
                 char* str = PR_smprintf("Unable to create nspr log file '%s'\n", ev);
                 if (str) {
                     OutputDebugStringA(str);
                     PR_smprintf_free(str);
                 }
 #else
                 fprintf(stderr, "Unable to create nspr log file '%s'\n", ev);
@@ skipping 293 matching lines @@
 #ifdef WIN32
     DebugBreak();
 #elif defined(XP_OS2)
     asm("int $3");
 #elif defined(ANDROID)
     __android_log_assert(NULL, "PRLog", "Assertion failure: %s, at %s:%d\n",
                          s, file, ln);
 #endif
     abort();
 }