Polish taskbar-icon for build issues

Change-Id: I5998bdabc80e59972446b1f8806ac8703ed5a729
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
QmlJS: Simplify code, fix MSVC-warning.

qmljsviewercontext.cpp:80: warning: C4715:
'QmlJS::ViewerContext::languageIsCompatible':
: not all control paths return a value.

Change-Id: I22279ef7a43873b9c8f3d73d3826b59d5abaa390
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>