--emit-tsd crashes when wasmTable is exported

[kichikuou]

Version of emscripten/emsdk:
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.57 (1df9c19)

Failing command line in full:

$ touch empty.c
$ emcc empty.c -sEXPORTED_RUNTIME_METHODS=wasmTable --emit-tsd=out.d.ts
Traceback (most recent call last):
  File "/Users/k/soft/emsdk/upstream/emscripten/emcc.py", line 1590, in <module>
    sys.exit(main(sys.argv))
  File "/Users/k/soft/emsdk/python/3.9.2_64bit/lib/python3.9/contextlib.py", line 79, in inner
    return func(*args, **kwds)
  File "/Users/k/soft/emsdk/upstream/emscripten/emcc.py", line 1583, in main
    ret = run(args)
  File "/Users/k/soft/emsdk/upstream/emscripten/emcc.py", line 648, in run
    return link.run(linker_inputs, options, state, newargs)
  File "/Users/k/soft/emsdk/upstream/emscripten/tools/link.py", line 2987, in run
    phase_post_link(options, state, wasm_target, wasm_target, target, js_syms)
  File "/Users/k/soft/emsdk/python/3.9.2_64bit/lib/python3.9/contextlib.py", line 79, in inner
    return func(*args, **kwds)
  File "/Users/k/soft/emsdk/upstream/emscripten/tools/link.py", line 1902, in phase_post_link
    phase_emit_tsd(options, wasm_target, js_syms, metadata)
  File "/Users/k/soft/emsdk/python/3.9.2_64bit/lib/python3.9/contextlib.py", line 79, in inner
    return func(*args, **kwds)
  File "/Users/k/soft/emsdk/upstream/emscripten/tools/link.py", line 1991, in phase_emit_tsd
    all_tsd = emscripten.create_tsd(metadata, embind_tsd)
  File "/Users/k/soft/emsdk/upstream/emscripten/tools/emscripten.py", line 637, in create_tsd
    out += create_tsd_exported_runtime_methods(metadata)
  File "/Users/k/soft/emsdk/upstream/emscripten/tools/emscripten.py", line 619, in create_tsd_exported_runtime_methods
    js_doc += f'{definition["docs"]}\nRuntimeExports[\'{name}\'] = \n{definition["snippet"]};\n'
KeyError: 'snippet'