fix

src/mapgen/earth/http.cpp

@@ -68,8 +68,8 @@ size_t multi_http_to_file(
 	}
 
 	for (const auto &uri : links) {
-		if (http_to_file(uri, path)) {
-			return std::filesystem::file_size(path);
+		if (const auto size = http_to_file(uri, path)) {
+			return size;
 		}
 	}
 

src/mapgen/mapgen_earth.cpp

@@ -225,7 +225,7 @@ MapgenEarth::MapgenEarth(MapgenEarthParams *params_, EmergeParams *emerge) :
 			}
 		}
 
-		if (std::filesystem::file_size(heat_img)) {
+		if (std::filesystem::exists(heat_img) && std::filesystem::file_size(heat_img)) {
 			const auto lock = std::lock_guard(maps_holder->download_lock);
 			if (!maps_holder->heat_image) {
 				maps_holder->heat_image = std::make_unique<PngImage>(heat_img);