Fix crash-at-shutdown if exiting before initializing wallet
Fix crash-at-shutdown if exiting before initializing wallet

Conflicts:
	src/init.cpp

Jheguy2/Mercury,dooglus/clams,robvanmieghem/clams,dooglus/clams,thunderrabbit/clams,robvanmieghem/clams,robvanmieghem/clams,Kefkius/clams,robvanmieghem/clams,thunderrabbit/clams,Kefkius/clams,Kefkius/clams,nochowderforyou/clams,Kefkius/clams,Jheguy2/Mercury,dooglus/clams,Jheguy2/Mercury,thunderrabbit/clams,nochowderforyou/clams,thunderrabbit/clams,Jheguy2/Mercury,nochowderforyou/clams,thunderrabbit/clams,nochowderforyou/clams,nochowderforyou/clams,Kefkius/clams,Jheguy2/Mercury,robvanmieghem/clams,dooglus/clams,dooglus/clams