Should output a proper for loop

Exe: https://github.com/rfalke/decompiler-subjects/blob/master/from_holdec/dmi/cfg/ia32_elf/subject.exe
Retdec: d57764a

Output:
```
// Address range: 0x80486f0 - 0x804871b
int32_t basic_7_for_loop(void) {
// 0x80486f0
int32_t v1; // bp-12
*(int32_t *)((int32_t)&v1 - 16) = 48;
int32_t v2 = 49; // 0x8048704
putchar(g1);
// branch -> 0x8048700
while (v2 != 58) {
// 0x8048700
*(int32_t *)g2 = v2;
v2++;
putchar(g1);
// continue -> 0x8048700
}
// 0x8048714
g1 = *(int32_t *)(g2 + 24);
return 0;
}
```

Retdec should output a regular for loop.

Start with the linked subject.exe and reproduce its decompilation using RetDec revision d57764a. Compare the output for basic_7_for_loop with the issue's example, then trace the loop-structure analysis that leaves it as a while loop. Done means the decompiler recognizes and emits a regular for loop for this case.

Written by the indexing model from the issue text.