v0.2.55..v0.2.56 changeset EdgeDistanceExtractor.cpp

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.cpp b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.cpp
index 4daefb3..fcffa7f 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.cpp
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/extractors/EdgeDistanceExtractor.cpp
@@ -55,7 +55,8 @@ class DiscretizeWaysVisitor : public ElementConstOsmMapVisitor
 {
 public:
 
-  DiscretizeWaysVisitor(double spacing, vector<Coordinate>& v) : _spacing(spacing), _result(v) {}
+  DiscretizeWaysVisitor(double spacing, vector<Coordinate>& v) : _spacing(spacing), _result(v) { }
+  virtual ~DiscretizeWaysVisitor() = default;
 
   void visit(const ConstElementPtr& e) override
   {
@@ -79,7 +80,8 @@ class LinesWaysVisitor : public ElementConstOsmMapVisitor
 {
 public:
 
-  LinesWaysVisitor(vector<Geometry*>& lines) : _lines(lines) {}
+  LinesWaysVisitor(vector<Geometry*>& lines) : _lines(lines) { }
+  virtual ~LinesWaysVisitor() = default;
 
   void visit(const ConstElementPtr& e) override
   {