Use correct assertion for the file implementation

components/platform/file.posix.cpp

@@ -7,11 +7,14 @@
 #include <string.h>
 #include <stdexcept>
 #include <string>
+#include <cassert>
 
 namespace Platform::File {
 
     static auto getNativeHandle(Handle handle)
     {
+        assert(handle != Handle::Invalid);
+
         return static_cast<int>(handle);
     }
 

components/platform/file.stdio.cpp

@@ -4,11 +4,14 @@
 #include <string.h>
 #include <string>
 #include <stdexcept>
+#include <cassert>
 
 namespace Platform::File {
 
     static auto getNativeHandle(Handle handle)
     {
+        assert(handle != Handle::Invalid);
+
         return reinterpret_cast<FILE*>(static_cast<intptr_t>(handle));
     }
 

components/platform/file.win32.cpp

@@ -4,11 +4,14 @@
 #include <string>
 #include <stdexcept>
 #include <boost/locale.hpp>
+#include <cassert>
 
 namespace Platform::File {
 
     static auto getNativeHandle(Handle handle)
     {
+        assert(handle != Handle::Invalid);
+
         return reinterpret_cast<HANDLE>(static_cast<intptr_t>(handle));
     }
 
@@ -58,8 +61,6 @@ namespace Platform::File {
     {
         auto nativeHandle = getNativeHandle(handle);
 
-        assert(isValidHandle(mHandle));
-
         BY_HANDLE_FILE_INFORMATION info;
 
         if (!GetFileInformationByHandle(nativeHandle, &info))