[PATCH 0/2] Fix two DWARF expression regressions

[Tom Tromey]

The recent changes to the DWARF expression evaluator caused a couple
of minor regressions with the AdaCore internal test suite.  (I think
these should also be visible with gdb's own test suite, when using a
suitable target, but I did not try this.)

These two patches fix the bugs.  Let me know what you think.

Tom