error compiling qt frontend

[Angus Leeming]

cxx: Error: ../../../../devel/src/frontends/qt2/FileDialog_private.C, line 
37: #308
          more than one instance of overloaded function "LyXFunc::dispatch"
          matches the argument list:
            function "LyXFunc::dispatch(kb_action, std::string, bool)"
            function "LyXFunc::dispatch(int, bool)"
            argument types are: (kb_action, const char *)
                lv_->getLyXFunc()->dispatch(action_, selectedFile().data());
-----------------------------------^
cxx: Info: 1 error detected in the compilation of 
"../../../../devel/src/frontends/qt2/FileDialog_private.C".