meson: fix conf_data used before definition

meson.build

@@ -16,6 +16,7 @@ llhttp = dependency('llhttp', 'libllhttp', required: get_option('proxy_client'))
 io_uring = dependency('liburing', required: false)
 
 deps = [fmt, gnutls, nettle, msgpack, argon2, openssl, jsoncpp, llhttp, io_uring]
+conf_data = configuration_data()
 
 add_project_arguments('-DMSGPACK_NO_BOOST', '-DASIO_STANDALONE', language : 'cpp')
 if io_uring.found()
@@ -45,8 +46,6 @@ opendht_src = [
     'src/thread_pool.cpp',
 ]
 
-conf_data = configuration_data()
-
 if get_option('indexation').enabled()
     opendht_src += 'src/indexation/pht.cpp'
     add_project_arguments('-DOPENDHT_INDEXATION', language : 'cpp')