Updated fmt_helper::pad2()

include/spdlog/details/fmt_helper.h

@@ -39,21 +39,12 @@ inline unsigned int count_digits(T n)
 
 inline void pad2(int n, memory_buf_t &dest)
 {
-    if (n > 99)
-    {
-        append_int(n, dest);
-    }
-    else if (n > 9) // 10-99
+    if (n >= 0 && n < 100) // 0-99
     {
         dest.push_back(static_cast<char>('0' + n / 10));
         dest.push_back(static_cast<char>('0' + n % 10));
     }
-    else if (n >= 0) // 0-9
-    {
-        dest.push_back('0');
-        dest.push_back(static_cast<char>('0' + n));
-    }
-    else // negatives (unlikely, but just in case, let fmt deal with it)
+    else // unlikely, but just in case, let fmt deal with it
     {
         fmt::format_to(dest, "{:02}", n);
     }