blockchain_utilities: report file offset where a read error occurs

src/blockchain_utilities/bootstrap_file.cpp

@@ -400,18 +400,18 @@ uint64_t BootstrapFile::count_bytes(std::ifstream& import_file, uint64_t blocks,
     {
       std::cout << refresh_string;
       MWARNING("WARNING: chunk_size " << chunk_size << " > BUFFER_SIZE " << BUFFER_SIZE
-          << "  height: " << h-1);
+          << "  height: " << h-1 << ", offset " << bytes_read);
       throw std::runtime_error("Aborting: chunk size exceeds buffer size");
     }
     if (chunk_size > CHUNK_SIZE_WARNING_THRESHOLD)
     {
       std::cout << refresh_string;
       MDEBUG("NOTE: chunk_size " << chunk_size << " > " << CHUNK_SIZE_WARNING_THRESHOLD << " << height: "
-          << h-1);
+          << h-1 << ", offset " << bytes_read);
     }
     else if (chunk_size <= 0) {
       std::cout << refresh_string;
-      MDEBUG("ERROR: chunk_size " << chunk_size << " <= 0" << "  height: " << h-1);
+      MDEBUG("ERROR: chunk_size " << chunk_size << " <= 0" << "  height: " << h-1 << ", offset " << bytes_read);
       throw std::runtime_error("Aborting");
     }
     // skip to next expected block size value