Fix buddy for Utils::PathChooser

Task-number: QTCREATORBUG-4966
Change-Id: I848f8fbdc6fa613e7308bb5700b9cbc305f36c73
Reviewed-on: http://codereview.qt-project.org/4760
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/libs/utils/pathchooser.cpp

@@ -259,6 +259,7 @@ PathChooser::PathChooser(QWidget *parent) :
 
     setLayout(d->m_hLayout);
     setFocusProxy(d->m_lineEdit);
+    setFocusPolicy(d->m_lineEdit->focusPolicy());
     setEnvironment(Environment::systemEnvironment());
 }