Fix building issue on OSX.

Author: Swordfish90

lib/kpty.cpp

@@ -174,14 +174,12 @@ KPtyPrivate::~KPtyPrivate()
 {
 }
 
-#ifndef HAVE_OPENPTY
 bool KPtyPrivate::chownpty(bool)
 {
 //    return !QProcess::execute(KStandardDirs::findExe("kgrantpty"),
 //        QStringList() << (grant?"--grant":"--revoke") << QString::number(masterFd));
     return true;
 }
-#endif
 
 /////////////////////////////
 // public member functions //

lib/kpty_p.h

@@ -35,9 +35,7 @@ class KPtyPrivate {
     KPtyPrivate(KPty* parent);
     virtual ~KPtyPrivate();
 
-#ifndef HAVE_OPENPTY
     bool chownpty(bool grant);
-#endif
 
     int masterFd;
     int slaveFd;