t.select: Fix overwrite flag

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@70549 15284696-431f-4ddb-bdfa-cd5b030d7da7

temporal/t.select/t.select.py

@@ -69,7 +69,7 @@ def main():
 
     tgis.init(True)
     p = tgis.TemporalAlgebraParser(run=True, debug=False, spatial=spatial, dry_run=dry_run)
-    pc = p.parse(expression, stdstype,  overwrite=grass.overwrite)
+    pc = p.parse(expression, stdstype,  overwrite=grass.overwrite())
 
     if dry_run is True:
         import pprint