testsuite: Fix req_th

testsuite/config/ghc

+# vim: set filetype=python:
+
 import re
 
 # Testsuite configuration setup for GHC

testsuite/driver/testlib.py

@@ -193,7 +193,8 @@ def req_th( name, opts ):
     case.
     """
     req_interp(name, opts)
-    return when(ghc_dynamic(), omit_ways(['profasm']))
+    if ghc_dynamic():
+        return _omit_ways(name, opts, ['profasm', 'profthreaded'])
 
 def req_smp( name, opts ):
     if not config.have_smp: