Fix CMake Error (add_dependencies with empty list) (#2899) #432

Job	Run time
WASM wasm32/scalar	39m 38s
Ubuntu Build release	22m 7s
WASM wasm32/simd-128	38m 9s
Ubuntu Build debug	22m 43s
WASM wasm32/simd-256	44m 24s
Ubuntu Build asan	53m 44s
Ubuntu Build msan	1h 55m 39s
Ubuntu Build scalar	23m 43s
Bazel	19m 6s
Ubuntu Build lowprecision	20m 47s
Ubuntu Build coverage	2h 38m 31s
Ubuntu Build release-nojpeg	15m 35s
Windows MSYS2 / mingw64	11m 42s
Ubuntu Build release:minimal	22m 43s
Windows MSYS2 / clang64	30m 50s
Ubuntu Build release:gcc8	15m 46s
Windows MSYS2 / mingw32	10m 44s
Ubuntu Build release:clang-7	16m 23s
Windows MSYS2 / clang32	23m 41s
	11h 45m 55s

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