#256 dwarf2: code uses local variable as global reference

[Peter Dons Tychsen]

Hello SDCC team,

Here is a patch for a small bug in the dwarf2 output fornatter.

It allocates a compiler name and inserts it into a global list for later use (which it does).
This does not end well of course, and name becomes severely corrupted.

Allocating it instead fixes the problem.

Thanks,

/pedro

[Philipp Klaus Krause]

Applied in #9432.

Philipp