fix(c_sync): unlock when returning early - fixes #641

Signed-off-by: Benn Snyder <benn.snyder@gmail.com>

Author: piedar

CMakeLists.txt

@@ -47,7 +47,7 @@ include (SetupDirectories)
 
 set (PROJECT_VER_MAJOR 0)
 set (PROJECT_VER_MINOR 6)
-set (PROJECT_VER_PATCH 2)
+set (PROJECT_VER_PATCH 3)
 set (PROJECT_VER
  "${PROJECT_VER_MAJOR}.${PROJECT_VER_MINOR}.${PROJECT_VER_PATCH}")
 set (PROJECT_APIVER

wrappers/c_sync/libfreenect_sync.c

@@ -284,7 +284,11 @@ static int setup_kinect(int index, int res, int fmt, int is_depth)
 int thread_running_prev = thread_running;
 if (!thread_running) {
 int ret = init_thread();
-if (ret != 0) return ret;
+if (ret != 0) {
+pthread_mutex_unlock(&runloop_lock);
+pending_runloop_tasks_dec();
+return ret;
+}
 }
 if (!kinects[index]) {
 kinects[index] = alloc_kinect(index);