in_table_factory.cc: use correct format specifier

Use %zu instead of %zd since size_t and uint32_t are unsigned.

Fix for:

[table/plain_table_factory.cc:55]: (warning) %zd in format string (no. 1)
 requires 'ssize_t' but the argument type is 'size_t {aka unsigned long}'.
[table/plain_table_factory.cc:58]: (warning) %zd in format string (no. 1)
 requires 'ssize_t' but the argument type is 'size_t {aka unsigned long}'.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

table/plain_table_factory.cc

@@ -52,10 +52,10 @@ std::string PlainTableFactory::GetPrintableTableOptions() const {
   snprintf(buffer, kBufferSize, "  hash_table_ratio: %lf\n",
            hash_table_ratio_);
   ret.append(buffer);
-  snprintf(buffer, kBufferSize, "  index_sparseness: %zd\n",
+  snprintf(buffer, kBufferSize, "  index_sparseness: %zu\n",
            index_sparseness_);
   ret.append(buffer);
-  snprintf(buffer, kBufferSize, "  huge_page_tlb_size: %zd\n",
+  snprintf(buffer, kBufferSize, "  huge_page_tlb_size: %zu\n",
            huge_page_tlb_size_);
   ret.append(buffer);
   snprintf(buffer, kBufferSize, "  encoding_type: %d\n",