Use hpp for header files

...as they contain C++ implementation code.

src/openrct2/config/Config.cpp

@@ -25,8 +25,8 @@
 #include "../network/network.h"
 #include "../OpenRCT2.h"
 #include "Config.h"
-#include "IniReader.h"
-#include "IniWriter.h"
+#include "IniReader.hpp"
+#include "IniWriter.hpp"
 
 extern "C"
 {

src/openrct2/config/IniReader.cpp

@@ -23,7 +23,7 @@
 #include "../core/FileStream.hpp"
 #include "../core/String.hpp"
 #include "../core/StringBuilder.hpp"
-#include "IniReader.h"
+#include "IniReader.hpp"
 
 struct Span
 {

src/openrct2/config/IniReader.hpp

@@ -16,7 +16,7 @@
 
 #include <string>
 #include "../common.h"
-#include "ConfigEnum.h"
+#include "ConfigEnum.hpp"
 
 interface IIniReader
 {

src/openrct2/config/IniWriter.cpp

@@ -17,7 +17,7 @@
 #include <sstream>
 #include "../core/FileStream.hpp"
 #include "../platform/platform.h"
-#include "IniWriter.h"
+#include "IniWriter.hpp"
 
 class IniWriter final : public IIniWriter
 {

src/openrct2/config/IniWriter.hpp

@@ -16,7 +16,7 @@
 
 #include <string>
 #include "../common.h"
-#include "ConfigEnum.h"
+#include "ConfigEnum.hpp"
 
 interface IIniWriter
 {

src/openrct2/libopenrct2.vcxproj

@@ -423,9 +423,9 @@
     <ClInclude Include="audio\AudioMixer.h" />
     <ClInclude Include="audio\AudioSource.h" />
     <ClInclude Include="config\Config.h" />
-    <ClInclude Include="config\ConfigEnum.h" />
-    <ClInclude Include="config\IniReader.h" />
-    <ClInclude Include="config\IniWriter.h" />
+    <ClInclude Include="config\ConfigEnum.hpp" />
+    <ClInclude Include="config\IniReader.hpp" />
+    <ClInclude Include="config\IniWriter.hpp" />
     <ClInclude Include="FileClassifier.h" />
     <ClInclude Include="network\ServerList.h" />
     <ClInclude Include="rct12.h" />