Fix Pgr_ksp constructor/destructor formatting and spacing

Author: Sohamsig

include/yen/ksp.hpp

@@ -53,7 +53,7 @@ namespace pgrouting {
 namespace yen {
 
 template < class G >
-class Pgr_ksp :  public Pgr_messages {
+class Pgr_ksp : public Pgr_messages {
      typedef typename G::V V;
      typedef std::set<Path, compPathsLess> pSet;
 
@@ -67,9 +67,9 @@ class Pgr_ksp :  public Pgr_messages {
          m_vis(new Visitor) {
          }
 
-     ~Pgr_ksp() {
-         delete m_vis;
- }
+    ~Pgr_ksp() {
+      delete m_vis;
+    }
 
      std::deque<Path> Yen(
              G &graph,