Merge from R9_0-AMD64, most notably:

- AMD64 support to insmod-busybox, minilibc, et al.
- Sync with insmod-modutils 2.4.19 something but everyone should use
  dietlibc nowadays
- Factor out compilation and prefix with $(DIET) for dietlibc builds
- 64-bit & varargs fixes

1 files changed, 2 insertions, 3 deletions

diff --git a/mdk-stage1/dietlibc/libpthread/pthread_mutex_destroy.c b/mdk-stage1/dietlibc/libpthread/pthread_mutex_destroy.c
index 33a16abd4..f5d66613c 100644
--- a/mdk-stage1/dietlibc/libpthread/pthread_mutex_destroy.c
+++ b/mdk-stage1/dietlibc/libpthread/pthread_mutex_destroy.c
@@ -8,9 +8,8 @@ int pthread_mutex_destroy(pthread_mutex_t *mutex)
 {
   __THREAD_INIT();
 
-  if ((mutex->owner)||(mutex->lock.__spinlock)) {
-    (*(__errno_location()))=EBUSY;
-    return -1;
+  if ((mutex->owner)||(mutex->lock.__spinlock==PTHREAD_SPIN_LOCKED)) {
+    return EBUSY;
   }
   return 0;
 }