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libdm: move initialisation of group_id in _aggregate_histogram()

Older compilers are not able to determine that although group_id
is only assigned in one branch of a conditional, it is never used
used when the other branch is taken:

  libdm-stats.c:3319: warning: "group_id" may be used uninitialized in this function

Avoid this by always initialising the variable when it is
declared.
This commit is contained in:
Bryn M. Reeves 2017-03-10 11:45:08 +00:00
parent 97b6486b27
commit 146b2582b0

View File

@ -3315,8 +3315,8 @@ static struct dm_histogram *_aggregate_histogram(const struct dm_stats *dms,
uint64_t area_id)
{
struct dm_histogram *dmh_aggr, *dmh_cur, **dmh_cachep;
uint64_t group_id = DM_STATS_GROUP_NOT_PRESENT;
int bin, nr_bins, group = 1;
uint64_t group_id;
size_t hist_size;
if (area_id == DM_STATS_WALK_REGION) {