[K42-discussion] patch to PEM tools to fix fullDeb build

[Andrew Baumann]

Hi all,

Doing a clean fullDeb build for the first time in a while recently, I 
discovered that the trace code generated by the PEM tool can include an 
unused variable, which gcc warns about. Because we have -Werror on, this 
breaks the build.

The attached patch fixes it for me, although not being familiar with the tool 
and the other environments in which it is used, I can't be sure if it is 
the "right" way to fix the problem. Could any of the PEM people comment?

Cheers,
Andrew
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