QMap: fix another UB (invalid cast) relating to QMap's end

Like in commit 75cdf654bcc192ba73a8834e507583a59140e7e4, we use the
pointer value of the QMap header (which is of type QMapNodeBase) as a
sentinel. It's never dereferenced. In that commit, the issue was calling
end() directly; in here, it happens when iterating forward from any
element, which means nextNode() can reach back to the header.

However, using static_cast is wrong, so we use reinterpret_cast.

Change-Id: I39332e0a867442d58082fffd15040317704a87ce
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

0 files changed, 0 insertions, 0 deletions