string.c: do not interpret '\\' before '\0' (CVE-2019-15846)

[exim.git] / test / scripts / 0000-Basic / 0381

# negatives with wildcard hosts when host has multiple names
munge dnssec
exim -d -bs -oMa V4NET.99.99.97
mail from:<notgov@test.ex>
rcpt to:<x@test.ex>
quit
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