cdr_adaptive_odbc: Also apply a filter when the CDR value is empty.

Extra CDR records are written if a filtered CDR value is empty because the
filter is not checked.

(closes issue ASTERISK-22272)
Reported by: Jordi Llull Chavarria
........

Merged revisions 401577 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@401579 65c4cc65-6c06-0410-ace0-fbb531ad65f3

cdr/cdr_adaptive_odbc.c

@@ -711,6 +711,14 @@ static int odbc_log(struct ast_cdr *cdr)
 					continue;
 				}
 				first = 0;
+			} else if (entry->filtervalue
+				&& ((!entry->negatefiltervalue && entry->filtervalue[0] != '\0')
+					|| (entry->negatefiltervalue && entry->filtervalue[0] == '\0'))) {
+				ast_verb(4, "CDR column '%s' was not set and does not match filter of"
+					" %s'%s'.  Cancelling this CDR.\n",
+					entry->cdrname, entry->negatefiltervalue ? "!" : "",
+					entry->filtervalue);
+				goto early_release;
 			}
 		}