Fix Block::getNumSuccessors()

- getTerminator() on a block can return nullptr; moreover, blocks that are improperly
  constructed/transformed by utilities/passes may not have terminators even for the
  top-level blocks

PiperOrigin-RevId: 232025963
1 file changed
tree: 3e69740fc1f6513a28688fb426a26cb62e1a984c
  1. bindings/
  2. g3doc/
  3. include/
  4. lib/
  5. test/
  6. tools/
  7. utils/
  8. .clang-format
  9. LICENSE.TXT