QtCore: Fix const correctness in old style casts

Found with GCC's -Wcast-qual.

Change-Id: Ia0aac2f09e9245339951ffff13c8d4b2920a11fb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/corelib/kernel/qmetatype.cpp b/src/corelib/kernel/qmetatype.cpp
index 58912e3fb7..729ca0e0d1 100644
--- a/src/corelib/kernel/qmetatype.cpp
+++ b/src/corelib/kernel/qmetatype.cpp
@@ -1840,7 +1840,8 @@ public:
     void delegate(const T *where) { DestructorImpl<T>::Destruct(m_type, const_cast<T*>(where)); }
     void delegate(const void *) {}
     void delegate(const QMetaTypeSwitcher::UnknownType*) {}
-    void delegate(const QMetaTypeSwitcher::NotBuiltinType *where) { customTypeDestructor(m_type, (void*)where); }
+    void delegate(const QMetaTypeSwitcher::NotBuiltinType *where)
+    { customTypeDestructor(m_type, const_cast<void *>(static_cast<const void *>(where))); }
 
 private:
     static void customTypeDestructor(const int type, void *where)