Fix possibly-uninitialized variable.

Oversight in e2d4ef8de et al (my fault not Peter's).  Per buildfarm.

Security: CVE-2017-7484

diff --git a/src/backend/utils/adt/rangetypes_selfuncs.c b/src/backend/utils/adt/rangetypes_selfuncs.c
index ec339d80580242c99ef7bbfb9d8b5fb18bb5810c..0444c63082175fd9d9174e035197fcad1f4a6a7d 100644 (file)
--- a/src/backend/utils/adt/rangetypes_selfuncs.c
+++ b/src/backend/utils/adt/rangetypes_selfuncs.c
@@ -374,8 +374,8 @@ calc_hist_selectivity(TypeCacheEntry *typcache, VariableStatData *vardata,
 {
    Datum      *hist_values;
    int         nhist;
-   Datum      *length_hist_values;
-   int         length_nhist;
+   Datum      *length_hist_values = NULL;
+   int         length_nhist = 0;
    RangeBound *hist_lower;
    RangeBound *hist_upper;
    int         i;