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 3d1b133e95c8dfb2c4495dbd2b9f3db7b99fb684..559dffa3285770905f7649ef2d9934dcedd7f760 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;