Update NSPR to 4.12 and NSS to 3.23 on iOS

nspr/pr/src/pthreads/ptthread.c

Index: nspr/pr/src/pthreads/ptthread.c
diff --git a/nspr/pr/src/pthreads/ptthread.c b/nspr/pr/src/pthreads/ptthread.c
index de90e4d39fdf4485f42240665db5ee913d162f05..9e12606ea3f4227943318fede21dc7799851e880 100644
--- a/nspr/pr/src/pthreads/ptthread.c
+++ b/nspr/pr/src/pthreads/ptthread.c
@@ -21,6 +21,10 @@
 #include <signal.h>
 #include <dlfcn.h>
 
+#if defined(OPENBSD) || defined(FREEBSD) || defined(DRAGONFLY)
+#include <pthread_np.h>
+#endif
+
 #ifdef SYMBIAN
 /* In Open C sched_get_priority_min/max do not work properly, so we undefine
  * _POSIX_THREAD_PRIORITY_SCHEDULING here.
@@ -1733,7 +1737,7 @@ PR_IMPLEMENT(PRStatus) PR_SetCurrentThreadName(const char *name)
 {
     PRThread *thread;
     size_t nameLen;
-    int result;
+    int result = 0;
 
     if (!name) {
         PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
@@ -1751,8 +1755,10 @@ PR_IMPLEMENT(PRStatus) PR_SetCurrentThreadName(const char *name)
         return PR_FAILURE;
     memcpy(thread->name, name, nameLen + 1);
 
-#if defined(OPENBSD) || defined(FREEBSD)
-    result = pthread_set_name_np(thread->id, name);
+#if defined(OPENBSD) || defined(FREEBSD) || defined(DRAGONFLY)
+    pthread_set_name_np(thread->id, name);
+#elif defined(NETBSD)
+    result = pthread_setname_np(thread->id, "%s", (void *)name);
 #else /* not BSD */
     /*
      * On OSX, pthread_setname_np is only available in 10.6 or later, so test