limit the amount of tags we allow in the makernote here.
limit the amount of tags we allow in the makernote here.

due to memory layout the max amount of 65536 tags could be used
to exhaust lots of memory and time during parsing,
as each tag can reuse the same memory range.

(Memory usage DOS (2GB+) and compute dos (several minutes on fast machine, but not endless))

This fixes OSS-FUZZ issue 27280.

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27280

libexif/libexif,libexif/libexif,libexif/libexif