SaveState: Split Do() into a separate header.

Core/HLE/HLEHelperThread.cpp

@@ -16,6 +16,7 @@
 // https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
 
 #include "Common/ChunkFile.h"
+#include "Common/ChunkFileDo.h"
 #include "Core/CoreTiming.h"
 #include "Core/MemMapHelpers.h"
 #include "Core/HLE/HLE.h"
@@ -73,8 +74,8 @@ void HLEHelperThread::DoState(PointerWrap &p) {
 		return;
 	}
 
-	p.Do(id_);
-	p.Do(entry_);
+	Do(p, id_);
+	Do(p, entry_);
 }
 
 void HLEHelperThread::Start(u32 a0, u32 a1) {