QRhiBackendCommandList: avoid new[]/delete mismatch

Change-Id: Iac2645ebd1d42753817078f194ba61520f5f70c9
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

src/gui/rhi/qrhi_p_p.h

@@ -660,7 +660,7 @@ class QRhiBackendCommandList
 {
 public:
     QRhiBackendCommandList() = default;
-    ~QRhiBackendCommandList() { delete v; }
+    ~QRhiBackendCommandList() { delete[] v; }
     inline void reset() { p = 0; }
     inline bool isEmpty() const { return p == 0; }
     inline T &get() {