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Setting environment variables can fail; check the return value from g_setenv() and bail out if we couldn't set SDL_VIDEODRIVER. Fixes: Coverity 1458798 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20210809161424.32355-1-peter.maydell@linaro.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>