fix create fail to panic
fix create fail to panic

a golfing problem, due to the scope problem, the err was masked,
and not return error, which will lead to panic

Signed-off-by: Wang Xu <0e9dfdf30d71e7ded2bba4a3dc006039c4b00f3d@gmail.com>

feiskyer/hyper,gnawux/hyper,laijs/hyper,gao-feng/hyper-public,ZJU-SEL/hyper,laijs/hyper,ZJU-SEL/hyper,gao-feng/hyper,bergwolf/hyperd,hyperhq/hyperd,hyperhq/hyper,gao-feng/hyper,ZJU-SEL/hyper,ZJU-SEL/hyper,gnawux/hyper,gao-feng/hyper,laijs/hyperd,hyperhq/hyper,gao-feng/hyper-public,feiskyer/hyper,laijs/hyperd,bergwolf/hyperd,feiskyer/hyper,bergwolf/hyperd,gnawux/hyper,laijs/hyper,hyperhq/hyperd,laijs/hyper,hyperhq/hyper,gao-feng/hyper,hyperhq/hyperd,gao-feng/hyper-public,feiskyer/hyper,laijs/hyperd,hyperhq/hyper,bergwolf/hyperd