Fix issues detected by Coverity Scan

Most of Coverity Scan reports are false
positives, but in rare cases we have
confirmed (very small) issues.

No functional change.

src/uci.cpp

@@ -188,7 +188,7 @@ void UCI::loop(int argc, char* argv[]) {
                     << "position key: "   << setw(16) << pos.key()
                     << "\nmaterial key: " << setw(16) << pos.material_key()
                     << "\npawn key:     " << setw(16) << pos.pawn_key()
-                    << dec << sync_endl;
+                    << dec << nouppercase << setfill(' ') << sync_endl;
 
       else if (token == "uci")
           sync_cout << "id name " << engine_info(true)