Uninitialized value in apply_to_row_uv()
clusterfuzz-testcase-minimized-dav1d_fuzzer-5684823666982912
$ valgrind --vex-guest-max-insns=10 --dsymutil=yes tests/dav1d_fuzzer clusterfuzz-testcase-minimized-dav1d_fuzzer-5684823666982912
[..]
==15116== Conditional jump or move depends on uninitialised value(s)
==15116== at 0x100131313: iclip (intops.h:44)
==15116== by 0x10013069B: apply_to_row_uv (film_grain_tmpl.c:431)
==15116== by 0x10012E538: dav1d_apply_grain_8bpc (film_grain_tmpl.c:507)
==15116== by 0x100167644: output_image (lib.c:196)
==15116== by 0x1001674FD: dav1d_get_picture (lib.c:261)
==15116== by 0x1000017DC: LLVMFuzzerTestOneInput (dav1d_fuzzer.c:117)
==15116== by 0x100001D09: main (main.c:87)