osd: fix a missing 'noexcept' on a move ctor

as a non-default, non-noexcept move ctor is ignored by
stl containers.

See clang-tidy's performance-noexcept-move-constructor

Signed-off-by: Ronen Friedman <[email protected]>

Author: ronen-fr

src/osd/PG.h

@@ -1446,10 +1446,13 @@ class PG : public DoutPrefixProvider,
  */
 class PGLockWrapper {
  public:
-  explicit PGLockWrapper(PGRef locked_pg) : m_pg{locked_pg} {}
+  template <typename A_PG_REF>
+  explicit PGLockWrapper(A_PG_REF&& locked_pg)
+      : m_pg{std::forward<A_PG_REF>(locked_pg)}
+  {}
   PGRef pg() { return m_pg; }
   ~PGLockWrapper();
-  PGLockWrapper(PGLockWrapper&& rhs) : m_pg(std::move(rhs.m_pg)) {
+  PGLockWrapper(PGLockWrapper&& rhs) noexcept : m_pg(std::move(rhs.m_pg)) {
     rhs.m_pg = nullptr;
   }
   PGLockWrapper(const PGLockWrapper& rhs) = delete;