Merge commit '5152196b'

* commit '5152196b':
  pthread: Avoid spurious wakeups

See: e3329474Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/pthread.c

@@ -63,8 +63,8 @@ typedef struct ThreadContext {
     pthread_cond_t last_job_cond;
     pthread_cond_t current_job_cond;
     pthread_mutex_t current_job_lock;
+    unsigned current_execute;
     int current_job;
-    unsigned int current_execute;
     int done;
 } ThreadContext;
 
@@ -151,8 +151,8 @@ static void* attribute_align_arg worker(void *v)
 {
     AVCodecContext *avctx = v;
     ThreadContext *c = avctx->thread_opaque;
+    unsigned last_execute = 0;
     int our_job = c->job_count;
-    int last_execute = 0;
     int thread_count = avctx->thread_count;
     int self_id;