Core: Append single character to stream as character, not as a string

src/server/game/Entities/Object/Object.cpp

@@ -155,7 +155,7 @@ std::string Object::_ConcatFields(uint16 startIndex, uint16 size) const
 {
     std::ostringstream ss;
     for (uint16 index = 0; index < size; ++index)
-        ss << GetUInt32Value(index + startIndex) << " ";
+        ss << GetUInt32Value(index + startIndex) << ' ';
     return ss.str();
 }