iterateCodePoints() on empty string is no good anymore

Change-Id: Id2ddbbff90f3cd32c03c7623af6d458717c7e8a8

i18npool/source/localedata/LocaleNode.cxx

@@ -1217,6 +1217,9 @@ void LCFormatNode::generateCode (const OFileWriter &of) const
         }
 
         // Rudimentary check if a pattern interferes with decimal number.
+        // But only if not inherited in which case we don't have aDecSep here.
+        if (!aDecSep.isEmpty())
+        {
             nIndex = 0;
             sal_uInt32 cDecSep = aDecSep.iterateCodePoints( &nIndex);
             for (vector<OUString>::const_iterator aIt = theDateAcceptancePatterns.begin();
@@ -1233,6 +1236,7 @@ void LCFormatNode::generateCode (const OFileWriter &of) const
                     }
                 }
             }
+        }
 
         // Check for duplicates.
         for (vector<OUString>::const_iterator aIt = theDateAcceptancePatterns.begin();