gdb/solib: make _linker_namespace use selected frame

When the convenience variable $_linker_namespace was introduced, I meant
for it to print the namespace of the frame that where the user was
stopped. However, due to confusing what "current_frame" and
"selected_frame" meant, it instead printed the namespace of the
lowermost frame.

This commit updates the code to follow my original intent. Since the
variable was never in a GDB release, updating the behavior should not
cause any disruption. It also adds a test to verify the functionality.

Approved-By: Tom Tromey <tom@tromey.com>

0 files changed, 0 insertions, 0 deletions