Fix building with PCH disabled.

Source/Core/VideoBackends/Software/SWVertexLoader.cpp

@@ -2,6 +2,8 @@
 // Licensed under GPLv2
 // Refer to the license.txt file included.
 
+#include <limits>
+
 #include "Common/ChunkFile.h"
 #include "Common/CommonTypes.h"
 

Source/Core/VideoBackends/Software/SWVertexLoader.h

@@ -4,6 +4,9 @@
 
 #pragma once
 
+#include <memory>
+#include <unordered_map>
+
 #include "Common/CommonTypes.h"
 
 #include "VideoBackends/Software/CPMemLoader.h"