MT#60120 do not bail out when processing 0 records

if a table to process has 0 records, this caused stop with an
error. this is ok if running a single task only, but if
mor task are provided, subsequent task will be skipped.

Change-Id: I03b312aa815bfc8b75bf5b058313d8b5de0ab205
(cherry picked from commit f43d2cba7b)

lib/NGCP/BulkProcessor/SqlProcessor.pm

@@ -793,7 +793,7 @@ sub transfer_table {
             tabletransferstarted($db,$tablename,$target_db,$targettablename,$rowcount,getlogger(__PACKAGE__));
         } else {
             transferzerorowcount($db,$tablename,$target_db,$targettablename,$rowcount,getlogger(__PACKAGE__));
-            return;
+            return 1;
         }
 
         my $errorstate = $RUNNING; # 1;
@@ -1079,7 +1079,7 @@ sub process_table {
             tableprocessingstarted($db,$tablename,$rowcount,getlogger(__PACKAGE__));
         } else {
             processzerorowcount($db,$tablename,$rowcount,getlogger(__PACKAGE__));
-            return;
+            return 1;
         }
 
         my @fieldnames = @$expected_fieldnames;