fix: const-correct config_send and file_send_single_calls for cppcheck

src/shared/config.c

@@ -87,7 +87,7 @@ void config_delete(Config* config) {
   free(config);
 }
 
-bool config_send(int file_descriptor, Config* config) {
+bool config_send(int file_descriptor, const Config* config) {
   if (!send_str(file_descriptor, config->version))
     return false;
   if (!send_str(file_descriptor, config->send_directory))

src/shared/config.h

@@ -44,7 +44,7 @@ Config* config_create(char* version, char* send_directory, char* receive_directo
                       bool use_compression, bool use_metadata, int compression_level,
                       bool use_sendfile, unsigned long long chunk_size);
 void config_delete(Config* config);
-bool config_send(int file_descriptor, Config* config);
+bool config_send(int file_descriptor, const Config* config);
 Config* config_receive(int file_descriptor);
 bool is_remote_dest(const char* s);
 void config_parse_ssh_dest(Config* config);

src/shared/file.c

@@ -99,7 +99,7 @@ bool file_load_data(File* file) {
 
 bool file_send_single_calls(File* file, int file_descriptor, bool use_metadata,
                             int compression_level, bool send_path) {
-  Data* data_to_send = file->data;
+  const Data* data_to_send = file->data;
   Data* compressed_data = NULL;
   if (compression_level > 0) {
     compressed_data = data_compress(file->data, compression_level);