security: Add "explicit" markers for one-parameter constructors

Change-Id: I072c924ecdd212d63700804e8af3f4fac6da1919
Refs: #1681
diff --git a/src/security/encryption-manager.hpp b/src/security/encryption-manager.hpp
index 8445c62..e1b0f0e 100644
--- a/src/security/encryption-manager.hpp
+++ b/src/security/encryption-manager.hpp
@@ -32,7 +32,8 @@
 class EncryptionManager
 {
 public:
-  virtual ~EncryptionManager()
+  virtual
+  ~EncryptionManager()
   {
   }