GuiHyperlink.cpp - compilation warning

[Uwe Stöhr]

Compilation via CMake and MSVC2008 shows this warning:
d:\lyxsvn\lyx-devel\src\frontends\qt4\guihyperlink.cpp(28) : warning C4717: 'lyx::operator==' : 
recursive on all control paths, function will cause runtime stack overflow

regards Uwe