dwarf/line: fix output for the last line of a compile unit
dwarf/line: fix output for the last line of a compile unit

The last entry of the debug_line table is supposed to be valid for
every PC address greater than its address.

derekparker/delve,derekparker/delve,dr2chase/delve,aarzilli/delve,go-delve/delve,go-delve/delve,alexbrainman/delve,aarzilli/delve,dlsniper/delve,dlsniper/delve,dlsniper/delve,alexbrainman/delve,dr2chase/delve,aarzilli/delve,aarzilli/delve,go-delve/delve,dr2chase/delve,go-delve/delve,go-delve/delve,derekparker/delve,alexbrainman/delve