Use constants for .PARK magic value

src/openrct2/FileClassifier.cpp

@@ -9,6 +9,7 @@
 
 #include "FileClassifier.h"
 
+#include "ParkFile.h"
 #include "core/Console.hpp"
 #include "core/FileStream.h"
 #include "core/Path.hpp"
@@ -76,7 +77,7 @@ static bool TryClassifyAsPark(OpenRCT2::IStream* stream, ClassifiedFileInfo* res
     try
     {
         auto magic = stream->ReadValue<uint32_t>();
-        if (magic == 0x4B524150)
+        if (magic == OpenRCT2::PARK_FILE_MAGIC)
         {
             result->Type = FILE_TYPE::PARK;
             result->Version = 0;

src/openrct2/ParkFile.cpp

@@ -71,8 +71,6 @@ static void UpdateFootpathsFromMapping(
 
 namespace OpenRCT2
 {
-    constexpr uint32_t PARK_FILE_MAGIC = 0x4B524150; // PARK
-
     // Current version that is saved.
     constexpr uint32_t PARK_FILE_CURRENT_VERSION = 0x3;
 

src/openrct2/ParkFile.h

@@ -7,8 +7,10 @@ struct ObjectRepositoryItem;
 
 namespace OpenRCT2
 {
+    constexpr uint32_t PARK_FILE_MAGIC = 0x4B524150; // PARK
+
     struct IStream;
-}
+} // namespace OpenRCT2
 
 class ParkFileExporter
 {