[search] Add "-" to result features with empty names.

search/intermediate_result.cpp

@@ -127,11 +127,11 @@ Result IntermediateResult::GenerateFinalResult(
   switch (m_resultType)
   {
   case RESULT_FEATURE:
-    return Result(m_str
+    return Result(m_str, info.m_name, info.m_flag, GetFeatureType(pCat)
               #ifdef DEBUG
                   + ' ' + strings::to_string(static_cast<int>(m_searchRank))
               #endif
-                  , info.m_name, info.m_flag, GetFeatureType(pCat),
+                  ,
                   m_type, m_rect, m_distance, m_direction);
 
   case RESULT_LATLON:

search/result.cpp

@@ -12,6 +12,9 @@ Result::Result(string const & str, string const & region,
     m_featureRect(featureRect), m_featureType(featureType),
     m_distanceFromCenter(distanceFromCenter), m_directionFromCenter(directionFromCenter)
 {
+  // Features with empty names can be found after suggestion.
+  if (m_str.empty())
+    m_str = "-";
 }
 
 Result::Result(string const & str, string const & suggestionStr)