Revert eval.c in e81a3e6df54842b5a836dad7055a4295cf4155bc
Inadvertently merged change to suppress warnings by gcc 9.2. Pointed out by Alan Wu.
Revert eval.c in e81a3e6df54842b5a836dad7055a4295cf4155bc
Inadvertently merged change to suppress warnings by gcc 9.2.
Pointed out by Alan Wu.