Fix a wp<> bug where the owner ID would be wrong

this was introduced recently. we make sure to use
the correct owner id (the sp) instead of the wp.

Change-Id: I78fdc6ec0c2d3e687278b70442d74d1924b512a2
diff --git a/include/utils/StrongPointer.h b/include/utils/StrongPointer.h
index 5daccf4..a8c9897 100644
--- a/include/utils/StrongPointer.h
+++ b/include/utils/StrongPointer.h
@@ -104,11 +104,8 @@
 private:    
     template<typename Y> friend class sp;
     template<typename Y> friend class wp;
-
-    // Optimization for wp::promote().
-    sp(T* p, bool);
-
-    T*              m_ptr;
+    void set_pointer(T* ptr);
+    T* m_ptr;
 };
 
 #undef COMPARE
@@ -206,10 +203,9 @@
 }
 
 template<typename T>
-sp<T>::sp(T* p, bool)
-: m_ptr(p)
-  {
-  }
+void sp<T>::set_pointer(T* ptr) {
+    m_ptr = ptr;
+}
 
 template <typename T>
 inline TextOutput& operator<<(TextOutput& to, const sp<T>& val)