Fix error loggig in headless mode on char16 platforms

#2235

Source/Editor/Managed/ManagedEditor.cpp

@@ -278,13 +278,7 @@ void ManagedEditor::Update()
 void ManagedEditor::Exit()
 {
     if (WasExitCalled)
-    {
-        // Ups xD
-        LOG(Warning, "Managed Editor exit called after exit or before init.");
         return;
-    }
-
-    // Set flag
     WasExitCalled = true;
 
     // Skip if managed object is missing

Source/Engine/Platform/Base/PlatformBase.cpp

@@ -357,7 +357,13 @@ void PlatformBase::Error(const Char* msg)
 #if PLATFORM_HAS_HEADLESS_MODE
     if (CommandLine::Options.Headless)
     {
+#if PLATFORM_TEXT_IS_CHAR16
+        StringAnsi ansi(msg);
+        ansi += PLATFORM_LINE_TERMINATOR;
+        printf("Error: %s\n", ansi.Get());
+#else
         std::cout << "Error: " << msg << std::endl;
+#endif
     }
     else
 #endif