ext/exif: Fix EXIF warning format specifiers for size_t values

[LamentXU123]

They are all size_t, so should use %zu or %zX instead of %d or %X
for referrence

typedefstruct {
php_stream*infile;
char*FileName;
time_tFileDateTime;
size_tFileSize;
image_filetypeFileType;
intHeight, Width;
intIsColor;
floatApertureFNumber;
floatExposureTime;
doubleFocalplaneUnits;
floatCCDWidth;
floatFocalLength;
floatDistance;
char*UserComment;
intUserCommentLength;
char*UserCommentEncoding;
char*encode_unicode;
char*decode_unicode_be;
char*decode_unicode_le;
char*encode_jis;
char*decode_jis_be;
char*decode_jis_le;
char*Copyright;
char*CopyrightPhotographer;
char*CopyrightEditor;
xp_field_listxp_fields;
thumbnail_dataThumbnail;
intsections_found;
image_info_listinfo_list[SECTION_COUNT];
intread_thumbnail;
intread_all;
intifd_nesting_level;
intifd_count;
intnum_errors;
file_section_listfile;
} image_info_type;

so image_info_type->FileSize is size_t