[tex-k] bugs in macros suggested in The TeXbook

[胡亚捷 (Hu Yajie)]

Page A375, lines 6--7
Change 
\def\kslant#1{\kern\expandafter\getfactor\the\fontdimen1#1\ht0}
to
\def\kslant#1{\kern\expandafter\getfactor\the\fontdimen1#1\ht0 }
since this macro is likely to be used in the midst of a paragraph.

Page A407, line -5
Change `\def\par{\endgraf\penalty5000}' to `\def\par{\endgraf\penalty5000 }'!

The answer to exercise 4.3 may have the same bug, though less likely to occur.

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Previous reports:
https://github.com/dine2014/texbook-mfbook-bugs/blob/master/bugs.md