Remove force_str() in log_event().
Remove force_str() in log_event().

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