Dear Maintainer,

During fuzz testing of exifprobe, a stack overflow was discovered that prevents the program from functioning correctly.

Build options
```
git clone https://salsa.debian.org/pkg-security-team/exifprobe.git
cd exifprobe
CC="clang -fsanitize=address" CXX="clang++ -fsanitize=address" make
```

ASAN Log
```
./exifprobe exifprobe-stack-overflow
=================================================================
==2498689==ERROR: AddressSanitizer: stack-overflow on address 0x7ffe57990e88 (pc 0x00000043ebd1 bp 0x7ffe57991710 sp 0x7ffe57990e90 T0)
    #0 0x43ebd1 in printf_common(void*, char const*, __va_list_tag*) /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors_format.inc:496:3
    #1 0x43f91e in vsnprintf /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:1651:1
    #2 0x4416f5 in snprintf /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:1722:1
    #3 0x52efdf in splice exifprobe/misc.c:1315:5
    #4 0x507cd5 in process_tiff_ifd exifprobe/process.c:183:38
    #5 0x5184e4 in process_subifd exifprobe/process.c:2118:40
    #6 0x50cb41 in process_tiff_ifd exifprobe/process.c:667:40
    #7 0x5184e4 in process_subifd exifprobe/process.c:2118:40
    #8 0x50cb41 in process_tiff_ifd exifprobe/process.c:667:40
    #9 0x5184e4 in process_subifd exifprobe/process.c:2118:40
    #10 0x50cb41 in process_tiff_ifd exifprobe/process.c:667:40
    #11 0x5184e4 in process_subifd exifprobe/process.c:2118:40
    #12 0x50cb41 in process_tiff_ifd exifprobe/process.c:667:40
    #13 0x5184e4 in process_subifd exifprobe/process.c:2118:40
    ...
```

The poc file used can be downloaded from the link below.
- https://drive.google.com/file/d/1ix_8OSUaQiLYDyG0LFIPy4khSYreGygf/view?usp=drive_link

This bug (vulnerability) can affect availability, causing the program to fail to terminate properly. Therefore, measures should be taken to prevent infinite function calls from occurring.