[flow-tools] Superfluous trailing \0's in string literals

[Jos Backus]

Maybe these superfluous \0's can be removed in 0.56?

src/flow-capture.c:char *progname = "flow-capture\0";
src/flow-dscan.c:char *progname = "flow-dscan\0";

-- 
Jos Backus                 _/  _/_/_/        Santa Clara, CA
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