[foreign-memaccess+abi] RFR: Fix duplicate declaration in methodData.cpp

[Paul Sandoz]

On Mon, 4 Jan 2021 22:23:34 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

> A recent automatic merge ended up creating a duplicate declaration of a function in methodData.cpp. This patch fixes that. Thanks to Ty for the fix.

Marked as reviewed by psandoz (Committer).

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PR: https://git.openjdk.java.net/panama-foreign/pull/428