UBSAN: out of bound array read in json

json_lib.c:847:25: runtime error: index 200 out of bounds for type 'json_string_char_classes [128]'
json_lib.c:847:25: runtime error: load of address 0x56286f7175a0 with insufficient space for an object of type 'json_string_char_classes'

fixes main.json_equals  and main.json_normalize