[browser] Fix crash on pushing to homescreen from control page. Contributes to JB#9522
[browser] Fix crash on pushing to homescreen from control page. Contributes to JB#9522

alinelena/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,rojkov/sailfish-browser,rojkov/sailfish-browser,alinelena/sailfish-browser,sailfishos/sailfish-browser,rojkov/sailfish-browser,sailfishos/sailfish-browser,sailfishos/sailfish-browser,alinelena/sailfish-browser,sailfishos/sailfish-browser