fix(ffi): Free sync progress and stats pointers in test_client_resource_cleanup

Author: xdustinface

dash-spv-ffi/tests/unit/test_client_lifecycle.rs

@@ -142,8 +142,15 @@ mod tests {
                 assert!(!client.is_null());
 
                 // Do some operations
-                let _ = dash_spv_ffi_client_get_sync_progress(client);
-                let _ = dash_spv_ffi_client_get_stats(client);
+                let progress = dash_spv_ffi_client_get_sync_progress(client);
+                let stats = dash_spv_ffi_client_get_stats(client);
+
+                if !progress.is_null() {
+                    dash_spv_ffi_sync_progress_destroy(progress);
+                }
+                if !stats.is_null() {
+                    dash_spv_ffi_spv_stats_destroy(stats);
+                }
 
                 dash_spv_ffi_client_destroy(client);
                 dash_spv_ffi_config_destroy(config);