QPointer: add get()

[ChangeLog][QtCore][QPointer] Added get() for STL
compatibility.

Change-Id: I84bf9d58cd92e1bc74f731c3e9002031045f8f5c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

src/corelib/kernel/qpointer.cpp

@@ -155,6 +155,13 @@
     Returns the pointer to the object being guarded.
 */
 
+/*!
+    \fn template <class T> T* QPointer<T>::get() const
+    \since 6.0
+
+    Same as data(). This function is provided for STL compatibility.
+*/
+
 /*!
     \fn template <class T> bool QPointer<T>::isNull() const
 

src/corelib/kernel/qpointer.h

@@ -75,6 +75,8 @@ public:
 
     inline T* data() const
     { return static_cast<T*>(wp.internalData()); }
+    inline T* get() const
+    { return data(); }
     inline T* operator->() const
     { return data(); }
     inline T& operator*() const