nacl: Patched to compile.
diff --git a/src/audio/nacl/SDL_naclaudio.c b/src/audio/nacl/SDL_naclaudio.c
index 40cbf99..33cbe1c 100644
--- a/src/audio/nacl/SDL_naclaudio.c
+++ b/src/audio/nacl/SDL_naclaudio.c
@@ -50,7 +50,7 @@
     
     SDL_LockMutex(private->mutex);  /* !!! FIXME: is this mutex necessary? */
 
-    if (SDL_AtomicGet(&this->enabled) && !SDL_AtomicGet(&this->paused)) {
+    if (SDL_AtomicGet(&_this->enabled) && !SDL_AtomicGet(&_this->paused)) {
         if (_this->convert.needed) {
             SDL_LockMutex(_this->mixer_lock);
             (*_this->spec.callback) (_this->spec.userdata,