After merging #201, as-8080: `call` instr compiles into wrong address when data is inbetween

[vbmacher]

call sample
label: db 'hello'
sample: hlt

Program should compile into:

0xCD, 0x08, 0x00, 'h', 'e', 'l', 'l', 'o', 0x76

However instead 0x08 the address is 0x04

[vbmacher]

also holds for as-z80