CFGFast: fix the issue that max_size can be None for _guess_data_type()
CFGFast: fix the issue that max_size can be None for _guess_data_type()

iamahuman/angr,f-prettyland/angr,schieb/angr,schieb/angr,angr/angr,schieb/angr,f-prettyland/angr,iamahuman/angr,tyb0807/angr,axt/angr,f-prettyland/angr,axt/angr,chubbymaggie/angr,tyb0807/angr,axt/angr,chubbymaggie/angr,chubbymaggie/angr,tyb0807/angr,angr/angr,angr/angr,iamahuman/angr