Quick fix for macOS compile fail

Author: harry-cpp

build/BuildMacOSTask.cs

@@ -27,6 +27,10 @@ public override void Run(BuildContext context)
             "freeimage/Source/LibJXR/image/decode/segdec.c",
             "#include \"strcodec.h\"",
             "#ifdef __APPLE__\r\n    #include <libkern/OSByteOrder.h>\r\n    #define _byteswap_ulong(x) _OSSwapInt32\r\n#endif\r\n\r\n#include \"strcodec.h\"");
+        context.ReplaceTextInFiles(
+            "freeimage/Source/LibJXR/image/decode/segdec.c",
+            "return _byteswap_ulong(*(U32*)pv);",
+            "return (U32)_byteswap_ulong(*(U32*)pv);");
         context.ReplaceTextInFiles(
             "freeimage/Source/LibJXR/jxrgluelib/JXRGlueJxr.c",
             "#include <limits.h>",