Fix harmless MSVC warning about int to bool conversion in Scintilla.

The warning is harmless but prevents buildbot from reporting any new warnings
during the library compilation step so suppress it.

Notice that it might be better if ViewStyle::extraFontFlag was bool and not
int to begin with.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63894 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/stc/ScintillaWX.cpp

@@ -1111,7 +1111,7 @@ void ScintillaWX::SetUseAntiAliasing(bool useAA) {
 }
 
 bool ScintillaWX::GetUseAntiAliasing() {
-    return vs.extraFontFlag;
+    return vs.extraFontFlag != 0;
 }
 
 //----------------------------------------------------------------------