Uncontrolled data used in path expression

[ArielSAdamsNASA]

Describe the bug
Accessing paths controlled by users can allow an attacker to access unexpected resources.

Expected behavior
Same behavior, fix warning.

Code snips

tblCRCTool/cfe_ts_crc.c

Line 123 in f569bf5

fd = open(argv[1], O_RDONLY);

Additional context
From CodeQL.
May use something like const char *filename = argv[1];

Reporter Info
Ariel Adams, MCSG Tech