[svg] Fix null text context crash
The input may contain invalid text constructs lacking a root <text> node
e.g. <svg><tspan>foo</tspan></svg>
Since we don't perform content model validation at the moment and text
contexts are only instantiated for root nodes, we must guard against
this case at render time.
Bug: oss-fuzz:29558
Change-Id: I7e39c1c4048900ce5becb3549802dc66bb1d242b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/353711
Commit-Queue: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@google.com>
Reviewed-by: Tyler Denniston <tdenniston@google.com>
1 file changed