[NaCl SDK] Upate atomic ops in nacl_io

native_client_sdk/src/libraries/nacl_io/mount_dev.cc

Index: native_client_sdk/src/libraries/nacl_io/mount_dev.cc
diff --git a/native_client_sdk/src/libraries/nacl_io/mount_dev.cc b/native_client_sdk/src/libraries/nacl_io/mount_dev.cc
index 99d8834ff480bd1baa8501c4d963c297a7659712..7d8aa3ef90254e3c3c42ca96d15088d55299f343 100644
--- a/native_client_sdk/src/libraries/nacl_io/mount_dev.cc
+++ b/native_client_sdk/src/libraries/nacl_io/mount_dev.cc
@@ -234,7 +234,7 @@ Error TtyNode::Write(size_t offs,
 Error TtyNode::Read(size_t offs, void* buf, size_t count, int* out_bytes) {
   AutoLock lock(&lock_);
   while (input_buffer_.size() <= 0) {
-    pthread_cond_wait(&is_readable_, &lock_);
+    pthread_cond_wait(&is_readable_, lock_);
   }
 
   // Copies data from the input buffer into buf.
@@ -363,7 +363,6 @@ Error MountDev::Access(const Path& path, int a_mode) {
 
 Error MountDev::Open(const Path& path, int mode, ScopedMountNode* out_node) {
   out_node->reset(NULL);
-  AutoLock lock(&lock_);
 
   // Don't allow creating any files.
   if (mode & O_CREAT)