fix compiler warnings (GCC + Clang)

src/world/generator/WorldGenerator.cpp

@@ -437,7 +437,6 @@ void WorldGenerator::generate(voxel* voxels, int chunkX, int chunkZ) {
 
     std::memset(voxels, 0, sizeof(voxel) * CHUNK_VOL);
 
-    const auto& indices = content.getIndices()->blocks;
     const auto& biomes = prototype.biomes.get();
     for (uint z = 0; z < CHUNK_D; z++) {
         for (uint x = 0; x < CHUNK_W; x++) {
@@ -456,6 +455,7 @@ void WorldGenerator::generate(voxel* voxels, int chunkX, int chunkZ) {
     generatePlacements(prototype, voxels, chunkX, chunkZ);
     generatePlants(prototype, values, voxels, chunkX, chunkZ, biomes);
 
+    [[maybe_unused]] const auto& indices = content.getIndices()->blocks;
     for (uint i = 0; i < CHUNK_VOL; i++) {
         blockid_t& id = voxels[i].id;
         if (id == BLOCK_STRUCT_AIR) {
@@ -609,3 +609,7 @@ WorldGenDebugInfo WorldGenerator::createDebugInfo() const {
         std::move(values)
     };
 }
+
+uint64_t WorldGenerator::getSeed() const {
+    return seed;
+}