- Fix a compile error (MDEV-6723)

modified:
  storage/connect/tabwmi.cpp

- Was change in revision 4029 but not listed then.
modified:
  storage/connect/mysql-test/connect/r/updelx.result

storage/connect/tabwmi.cpp

@@ -200,7 +200,7 @@ PQRYRES WMIColumns(PGLOBAL g, char *nsp, char *cls, bool info)
         }  // endif res
 
       len = (unsigned)SysStringLen(propname);
-      length[0] = max(length[0], len);
+      length[0] = MY_MAX(length[0], len);
       } // enfor i
 
     res = SafeArrayDestroy(prnlist);