crash-reporter: fix pstore detection

The current Enable logic looks for an existing crash rather than the
crash dir itself, so when we boot up clean we get a warning that we
do not support kernel crashes.

TEST=`FEATURES=test emerge-link crash-reporter` passes
TEST=`cbuildbot amd64-generic-full` passes
TEST=booted VM and checked syslogs

Change-Id: I076a37889ea10ed30ae522eba007619b001ec787
Tested-by: Mike Frysinger <>
Reviewed-by: Luigi Semenzato <>
Commit-Queue: Mike Frysinger <>
4 files changed
tree: fffe9e7fe9e4c01ae54bf99a31879e3bf0576fdb
  1. crash_reporter/