Ensured expressions are properly destroyed thus fixing a memory leak.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/CppParser/AST.cpp

@@ -498,6 +498,8 @@ DEF_STRING(Statement, String)
 
 Statement::Statement(const std::string& str, StatementClass stmtClass, Declaration* decl) : String(str), Class(stmtClass), Decl(decl) {}
 
+Statement::~Statement() {}
+
 Expression::Expression(const std::string& str, StatementClass stmtClass, Declaration* decl)
     : Statement(str, stmtClass, decl) {}
 

src/CppParser/AST.h

@@ -498,6 +498,7 @@ class CS_API Statement
 {
 public:
     Statement(const std::string& str, StatementClass Class = StatementClass::Any, Declaration* decl = 0);
+    virtual ~Statement();
     StatementClass Class;
     Declaration* Decl;
     STRING(String)