test_signup: Store return value of sorted.
test_signup: Store return value of sorted.

Sorted does not sort in-place.

timabbott/zulip,brainwane/zulip,mahim97/zulip,kou/zulip,synicalsyntax/zulip,tommyip/zulip,jackrzhang/zulip,brainwane/zulip,synicalsyntax/zulip,andersk/zulip,showell/zulip,brainwane/zulip,tommyip/zulip,kou/zulip,punchagan/zulip,eeshangarg/zulip,shubhamdhama/zulip,andersk/zulip,punchagan/zulip,jackrzhang/zulip,rht/zulip,eeshangarg/zulip,rht/zulip,synicalsyntax/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,brainwane/zulip,synicalsyntax/zulip,tommyip/zulip,tommyip/zulip,mahim97/zulip,shubhamdhama/zulip,punchagan/zulip,hackerkid/zulip,hackerkid/zulip,rishig/zulip,rht/zulip,brainwane/zulip,shubhamdhama/zulip,timabbott/zulip,kou/zulip,zulip/zulip,timabbott/zulip,dhcrzf/zulip,punchagan/zulip,hackerkid/zulip,mahim97/zulip,showell/zulip,dhcrzf/zulip,rishig/zulip,brainwane/zulip,shubhamdhama/zulip,brainwane/zulip,eeshangarg/zulip,zulip/zulip,jackrzhang/zulip,showell/zulip,synicalsyntax/zulip,mahim97/zulip,rishig/zulip,timabbott/zulip,eeshangarg/zulip,punchagan/zulip,showell/zulip,zulip/zulip,hackerkid/zulip,hackerkid/zulip,showell/zulip,andersk/zulip,andersk/zulip,rht/zulip,jackrzhang/zulip,shubhamdhama/zulip,timabbott/zulip,shubhamdhama/zulip,andersk/zulip,tommyip/zulip,andersk/zulip,hackerkid/zulip,eeshangarg/zulip,tommyip/zulip,kou/zulip,rishig/zulip,jackrzhang/zulip,mahim97/zulip,punchagan/zulip,showell/zulip,jackrzhang/zulip,timabbott/zulip,rht/zulip,kou/zulip,synicalsyntax/zulip,showell/zulip,rht/zulip,kou/zulip,kou/zulip,hackerkid/zulip,rishig/zulip,rishig/zulip,dhcrzf/zulip,zulip/zulip,synicalsyntax/zulip,eeshangarg/zulip,zulip/zulip,rishig/zulip,timabbott/zulip,dhcrzf/zulip,dhcrzf/zulip,jackrzhang/zulip,dhcrzf/zulip,rht/zulip,andersk/zulip,mahim97/zulip,shubhamdhama/zulip,tommyip/zulip,dhcrzf/zulip,zulip/zulip