[FIX] tools: do not display False as the currency

The field symbol is not required on a res.currency (it should and will be
changed in master). In case it is not set, do not display the currency in the
rapport.

Fixes #11346

openerp/report/report_sxw.py

@@ -223,7 +223,7 @@ class rml_parse(object):
             return date.strftime(date_format.encode('utf-8'))
 
         res = self.lang_dict['lang_obj'].format('%.' + str(digits) + 'f', value, grouping=grouping, monetary=monetary)
-        if currency_obj:
+        if currency_obj and currency_obj.symbol:
             if currency_obj.position == 'after':
                 res = u'%s\N{NO-BREAK SPACE}%s' % (res, currency_obj.symbol)
             elif currency_obj and currency_obj.position == 'before':

openerp/tools/misc.py

@@ -1168,7 +1168,7 @@ def formatLang(env, value, digits=None, grouping=True, monetary=False, dp=False,
 
     res = lang_obj.format('%.' + str(digits) + 'f', value, grouping=grouping, monetary=monetary)
 
-    if currency_obj:
+    if currency_obj and currency_obj.symbol:
         if currency_obj.position == 'after':
             res = '%s %s' % (res, currency_obj.symbol)
         elif currency_obj and currency_obj.position == 'before':