*-pc-windows-gnu can't bootstrap with --enable-debuginfo-lines

[alexcrichton]

Failure happens in the panic_unwind crate:

inlinable function call in a function with debug info must have a !dbg location
  call void @rust_eh_unwind_resume(i8* %5)
LLVM ERROR: Broken function found, compilation aborted!
make: *** [x86_64-pc-windows-gnu/stage0/lib/rustlib/x86_64-pc-windows-gnu/lib/stamp.panic_unwind] Error 1

This probably has to do with how we're calling the "custom resume" function, unsure what's going on.

[petrochenkov]

Duplicate of #35566

[alexcrichton]

Indeed!