[PATCH 0/1] MR8267: mshtml: Fix buffer underflow in range_to_string.

[Yuxuan Shui (＠yshui)]

range_to_string scans the buf from right to left for whitespaces. If the buf
contains only whitespaces, we will scan past the start of the buf.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/8267