Remove exposure of FS_LONG to outside code

Author: DaisyDogs07

FileSystem.cc

@@ -32,8 +32,12 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+
+#define FS_LONG long
 #else
 #include <Windows.h>
+
+#define FS_LONG long long
 #endif
 
 #undef FS_O_TMPFILE

fsdef.h

@@ -190,4 +190,6 @@ struct fs_utimbuf {
   fs_time_t modtime;
 };
 
+#undef FS_LONG
+
 #endif

module.cc

@@ -28,8 +28,12 @@
 #include "node_buffer.h"
 #include <type_traits>
 
-#ifdef _WIN32
+#ifdef __linux__
+#define FS_LONG long
+#else
 #include <Windows.h>
+
+#define FS_LONG long long
 #endif
 
 using namespace node;