Bug 67562

The following tests started failing on Qt Linux Release between r94481 and r94483 (inclusive): http/tests/canvas/philip/tests/security.reset.html http/tests/canvas/philip/tests/security.pattern.cross.html http/tests/canvas/philip/tests/security.pattern.create.html http/tests/canvas/philip/tests/security.pattern.image.strokeStyle.html http/tests/canvas/philip/tests/security.pattern.canvas.fillStyle.html http/tests/canvas/philip/tests/security.drawImage.canvas.html http/tests/canvas/philip/tests/security.drawImage.image.html http/tests/canvas/philip/tests/security.pattern.image.fillStyle.html http/tests/canvas/philip/tests/security.pattern.canvas.timing.html http/tests/canvas/philip/tests/security.pattern.canvas.strokeStyle.html http/tests/cache/history-only-cached-subresource-loads.html http/tests/cache/history-only-cached-subresource-loads-max-age-https.html http/tests/cache/subresource-expiration-1.html http/tests/cache/subresource-expiration-2.html http/tests/inspector/console-cd.html http/tests/inspector/console-cd-completions.html http/tests/inspector-enabled/console-log-before-frame-navigation.html http/tests/inspector-enabled/dom-storage-open.html http/tests/inspector-enabled/console-clear-arguments-on-frame-remove.html http/tests/inspector-enabled/database-open.html http://trac.webkit.org/log/trunk?rev=94452 http://build.webkit.org/results/Qt%20Linux%20Release/r94483%20(37122)/results.html failed r94452 co-incided with another change that broke the Qt bot so got masked. I confirmed locally that this change is causing the crashes.