Fix missing header in sync.h

promag · promag · commit 686c5456f2fc · 2020-03-15T22:43:39.000Z
diff --git a/src/sync.h b/src/sync.h
@@ -10,9 +10,9 @@
 #include <util/macros.h>
 
 #include <condition_variable>
-#include <thread>
 #include <mutex>
-
+#include <string>
+#include <thread>
 
 ////////////////////////////////////////////////
 //                                            //
