Style, logging.

src/protocols/protocol_block_in.cpp

@@ -215,8 +215,8 @@ get_blocks protocol_block_in::create_get_inventory() const NOEXCEPT
     // This will bypass all blocks with candidate headers, resulting in block
     // orphans if headers-first is run followed by a restart and blocks-first.
     const auto& query = archive();
-    return create_get_inventory(query.get_candidate_hashes(get_blocks::heights(
-        query.get_top_candidate())));
+    const auto index = get_blocks::heights(query.get_top_candidate());
+    return create_get_inventory(query.get_candidate_hashes(index));
 }
 
 get_blocks protocol_block_in::create_get_inventory(
@@ -228,8 +228,19 @@ get_blocks protocol_block_in::create_get_inventory(
 get_blocks protocol_block_in::create_get_inventory(
     hashes&& hashes) const NOEXCEPT
 {
-    LOGP("Request (" << hashes .size() << ") blocks after ["
-        << encode_hash(hashes.front()) << "] from [" << authority() << "].");
+    if (hashes.empty())
+        return {};
+
+    if (hashes.size() == one)
+    {
+        LOGP("Request block inventory after [" << encode_hash(hashes.back())
+            << "] from [" << authority() << "].");
+    }
+    else
+    {
+        LOGP("Request block inventory (" << hashes.size() << ") after ["
+            << encode_hash(hashes.back()) << "] from [" << authority() << "].");
+    }
 
     return { std::move(hashes) };
 }