Fix emitting a line entry for PC = 0
Fix emitting a line entry for PC = 0

Summary: ART doesn't take the initial PC of the DWARF program into account when symbolicating a given frame, so we need to explicitly say "hey PC 0 goes to line 0"

Reviewed By: int3

Differential Revision: D14112647

fbshipit-source-id: 3ef4f050a46cbfccabfc016f8bcbd58e73917f33

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