Fix ts_crc32_section return type

There's no such type u_int32_t, and the declaration uses correct uint32_t

crc.c

 	return crc;
 }
 
-u_int32_t ts_crc32_section(struct ts_section_header *section_header) {
+uint32_t ts_crc32_section(struct ts_section_header *section_header) {
 	return ts_crc32(section_header->section_data, section_header->section_data_len);
 }