message: fix warnning in pika_geohash
diff: @@ -151,7 +151,7 @@ int geohashEncode(const GeoHashRange *long_range, const GeoHashRange *lat_range,
  }
  int geohashEncodeType(double longitude, double latitude, uint8_t step, GeoHashBits *hash) {
  - GeoHashRange r[2] = {{0}};
  + GeoHashRange r[2] = {GeoHashRange()};
  geohashGetCoordRange(&r[0], &r[1]);
  return geohashEncode(&r[0], &r[1], longitude, latitude, step, hash);
  }
  @@ -194,7 +194,7 @@ int geohashDecode(const GeoHashRange long_range, const GeoHashRange lat_range,
  }
  int geohashDecodeType(const GeoHashBits hash, GeoHashArea *area) {
  - GeoHashRange r[2] = {{0}};
  + GeoHashRange r[2] = {GeoHashRange()};
  geohashGetCoordRange(&r[0], &r[1]);
  return geohashDecode(r[0], r[1], hash, area);
  }
  @@ -211,7 +211,7 @@ int geohashDecodeAreaToLongLat(const GeoHashArea *area, double *xy) {
  }
  int geohashDecodeToLongLatType(const GeoHashBits hash, double *xy) {
  - GeoHashArea area = {{0}};
  + GeoHashArea area = GeoHashArea();
  if (!xy || !geohashDecodeType(hash, &area))
  return 0;
  return geohashDecodeAreaToLongLat(&area, xy);
  