Fix a global var bug..

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/fork@1509 b32b6428-25c9-4566-ad07-03861ab6144f

apps/tools/xaal/tools/tail.py

@@ -7,12 +7,12 @@
 #  it under the terms of the GNU General Public License as published by
 #  the Free Software Foundation, either version 3 of the License, or
 #  (at your option) any later version.
-#  		
+#
 #  This program is distributed in the hope that it will be useful,
 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #  GNU General Public License for more details.
-#  				
+#
 #  You should have received a copy of the GNU General Public License
 #  along with this program. If not, see <http://www.gnu.org/licenses/>.
 #  
@@ -67,6 +67,7 @@ def usage():
 
 
 def main():
+    global level
     if len(sys.argv) == 2:
         level = int(sys.argv[1])