Minor update to VS project file.

src/windows/Stella.vcxproj

@@ -1782,6 +1782,7 @@
     <ClInclude Include="..\emucore\EventHandlerConstants.hxx" />
     <ClInclude Include="..\emucore\exception\EmulationWarning.hxx" />
     <ClInclude Include="..\emucore\exception\FatalEmulationError.hxx" />
+    <ClInclude Include="..\emucore\FBBackend.hxx" />
     <ClInclude Include="..\emucore\FBSurface.hxx" />
     <ClInclude Include="..\emucore\FrameBufferConstants.hxx" />
     <ClInclude Include="..\emucore\Lightgun.hxx" />
@@ -2060,4 +2061,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

src/windows/Stella.vcxproj.filters

@@ -2114,6 +2114,9 @@
     <ClInclude Include="..\common\VideoModeHandler.hxx">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\emucore\FBBackend.hxx">
+      <Filter>Header Files\emucore</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="stella.ico">
@@ -2126,4 +2129,4 @@
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
-</Project>
+</Project>