User-Agent:       
Build Identifier: 

When viewing a bug list, if you change fields to include % complete and any of
the estimate fields contain 0.0 (what are the chances of that happening?), you
get a divide by 0 error.

Reproducible: Always
Steps to Reproduce:
1.View bug 123574, 
2.build the dependency list
3.view as a bug list
4.change fields to add % complete


2.
3.

Actual Results:  
5.boom

Expected Results:  
Well, if people actually filled in all the estimate fields, it should be OK, but
there will always be slackers who don't, so perhaps put a check in for 0 before
calculating percentage.

DBD::Pg::st execute failed: ERROR:  division by zero on numeric [for
Statement "SELECT bugs.bug_id, bugs.bug_severity, bugs.priority,
bugs.bug_status, bugs.resolution, bugs.remaining_time,
(SUM(ldtime.work_time)*COUNT(DISTINCT ldtime.bug_when)/COUNT(bugs.bug_id))
AS actual_time, bugs.alias, bugs.bug_severity, bugs.priority,
bugs.rep_platform, map_assigned_to.login_name, bugs.bug_status,
bugs.resolution, (SUM(ldtime.work_time)*COUNT(DISTINCT
ldtime.bug_when)/COUNT(bugs.bug_id)) AS actual_time,
(100*((SUM(ldtime.work_time)*COUNT(DISTINCT
ldtime.bug_when)/COUNT(bugs.bug_id))/((SUM(ldtime.work_time)*COUNT(DISTINCT
ldtime.bug_when)/COUNT(bugs.bug_id))+bugs.remaining_time))) AS
percentage_complete, bugs.short_desc FROM bugs LEFT JOIN bug_group_map  ON
bug_group_map.bug_id = bugs.bug_id  AND bug_group_map.group_id NOT IN
(33,22,32,4,31,78,48,75,68,44,12,67,76,41,15,58,25,30,21,35,7,62,61,17,72,50,71$LEFT
JOIN cc ON cc.bug_id = bugs.bug_id AND cc.who = 81410  , profiles AS
map_assigned_to, longdescs AS ldtime WHERE bugs.assigned_to =
map_assigned_to.userid AND ldtime.bug_id = bugs.bug_id AND (bugs.bug_id IN
('131525','125445','117972','130896','132091','131580','126880','132313','10575$AND
((bug_group_map.group_id IS NULL)    OR (bugs.reporter_accessible = 1
AND bugs.reporter = 81410)     OR (bugs.cclist_accessible = 1 AND cc.who
IS NOT NULL)     OR (bugs.assigned_to = 81410) OR (bugs.qa_contact =
81410) ) GROUP BY bugs.bug_id,
bugs.bug_id,bugs.bug_severity,bugs.priority,bugs.bug_status,bugs.resolution,bug$ORDER
BY bugs.bug_status,bugs.bug_id "] at Bugzilla/DB.pm line 74
        Bugzilla::DB::SendSQL('SELECT bugs.bug_id, bugs.bug_severity,
bugs.priority, bugs.bu...') called at /var/www/bugzilla/beta1/buglist.cgi
line 793