Fixed dataset initialization speed on Linux if thread affinity was used.

src/backend/common/Worker.cpp

@@ -30,6 +30,7 @@
 
 
 xmrig::Worker::Worker(size_t id, int64_t affinity, int priority) :
+    m_affinity(affinity),
     m_id(id),
     m_hashCount(0),
     m_timestamp(0),