Fix style guide errors

pipeline/includes/data_model/brewery_result.h

@@ -13,10 +13,10 @@
  */
 struct BreweryResult {
    /// @brief Brewery display name.
-   std::string name;
+   std::string name{};
 
    /// @brief Brewery description text.
-   std::string description;
+   std::string description{};
 };
 
 #endif  // BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_BREWERY_RESULT_H_

pipeline/includes/data_model/enriched_city.h

@@ -15,7 +15,7 @@
  */
 struct EnrichedCity {
    Location location;
-   std::string region_context;
+   std::string region_context{};
 };
 
 #endif  // BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_ENRICHED_CITY_H_

pipeline/includes/data_model/location.h

@@ -13,25 +13,25 @@
  */
 struct Location {
    /// @brief City name.
-   std::string city;
+   std::string city{};
 
    /// @brief State or province name.
-   std::string state_province;
+   std::string state_province{};
 
    /// @brief ISO 3166-2 subdivision code.
-   std::string iso3166_2;
+   std::string iso3166_2{};
 
    /// @brief Country name.
-   std::string country;
+   std::string country{};
 
    /// @brief ISO 3166-1 country code.
-   std::string iso3166_1;
+   std::string iso3166_1{};
 
    /// @brief Latitude in decimal degrees.
-   double latitude;
+   double latitude{};
 
    /// @brief Longitude in decimal degrees.
-   double longitude;
+   double longitude{};
 };
 
 #endif  // BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_LOCATION_H_

pipeline/includes/data_model/user_result.h

@@ -13,10 +13,10 @@
  */
 struct UserResult {
    /// @brief Username handle.
-   std::string username;
+   std::string username{};
 
    /// @brief Short user biography.
-   std::string bio;
+   std::string bio{};
 };
 
 #endif  // BIERGARTEN_PIPELINE_INCLUDES_DATA_MODEL_USER_RESULT_H_