Do not double-define namespace variable

python/dune/perftool/compile.py

@@ -17,9 +17,8 @@ def read_ufl(uflfile):
 
     # Read the given ufl file and execute it
     uflcode = read_ufl_file(uflfile)
-    namespace = {}
+    namespace = globals()
     try:
-        namespace = globals()
         exec("from dune.perftool.ufl.execution import *\n" + uflcode, namespace)
     except:
         import os