libpcre: Masked uninitialised variable warning.
libpcre: Masked uninitialised variable warning.

libpcre is spaghetti code, and I don't trust it at all.  Still, this warning
was *probably* spurious.

Signed-off-by: David Cock <5d58d56d4931c603692c452867e4ec6f0ace5d10@inf.ethz.ch>

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