Alex Hoppen a3a8a1a15b [Index] Ignore nullptr decls for indexing ...

We can end up with a call to `indexTopLevelDecl(D)` with `D == nullptr` in non-assert builds e.g. when indexing a module in `indexModule` and
- `ASTReader::GetDecl` returns `nullptr` if `Index >= DeclsLoaded.size()`, thus returning `nullptr`
=> `ModuleDeclIterator::operator*` returns `nullptr`
=> we call `IndexCtx.indexTopLevelDecl` with `nullptr`

Be resilient and just ignore the `nullptr` decls during indexing.

Reviewed By: akyrtzi

Differential Revision: https://reviews.llvm.org/D102001

2021-05-06 13:12:26 -07:00

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