cmake HAVE_ZLIB_UNCOMPRESS_PROTOTYPE examples

darktable-org/rawspeed cmake/Modules/CheckZLIB.cmake :38

CHECK_PROTOTYPE_DEFINITION(uncompress
 "int uncompress(unsigned char* dest, uLongf* destLen, const unsigned char* source, unsigned long sourceLen)"
 "Z_OK"
 "zlib.h"
 HAVE_ZLIB_UNCOMPRESS_PROTOTYPE)