Use std::min and std::max, not the misc versions.

dw/textblock.hh

@@ -1,8 +1,12 @@
+static_assert( __cplusplus >= 2020'02 );
+
 #ifndef __DW_TEXTBLOCK_HH__
 #define __DW_TEXTBLOCK_HH__
 
 #include <limits.h>
 
+#include <algorithm>
+
 #include "regardingborder.hh"
 #include "../lout/misc.hh"
 
@@ -401,8 +405,8 @@ protected:
       inline int totalHeight (int marginNextLine)
       { return borderAscent + borderDescent
             // Collapsing of the margins of adjacent lines is done here:
-            + lout::misc::max (marginDescent - borderDescent, marginNextLine,
-                               breakSpace); }
+            + std::max( marginDescent - borderDescent, std::max( marginNextLine,
+                               breakSpace ) ); }
 
       /* Maximum of all line widths, including this line. Does not
        * include the last space, but the last hyphen width. Please