pmrep: drop RHBZ#1286733 compat

[Marko Myllynen <myllynen@xxxxxxxxxx>]

RHBZ#1286733 has been fixed.

---
 src/pmrep/pmrep.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/pmrep/pmrep.py b/src/pmrep/pmrep.py
index e04e23a..04b4799 100644
--- a/src/pmrep/pmrep.py
+++ b/src/pmrep/pmrep.py
@@ -638,8 +638,9 @@ class PMReporter(object):
                     except ValueError as error:
                         err = "Invalid syntax (expected metric=expression)"
                     except Exception as error:
-                        #err = self.context.pmDerivedErrStr() # RHBZ#1286733
-                        err = "Unknown reason"
+                        err = self.context.pmDerivedErrStr()
+                        if not err:
+                            err = "Unidentified error"
                     finally:
                         if err:
                             sys.stderr.write("Failed to register derived 
metric: %s.\n" % err)

Thanks,

-- 
Marko Myllynen