textproc/lgrind: Make it build with TeX Live 2022.

textproc/lgrind/Makefile

@@ -4,7 +4,7 @@ CATEGORIES=	textproc devel print
 
 VERSION=	3.67
 DISTNAME=	lgrind-${VERSION}
-REVISION =	8
+REVISION =	9
 DISTFILES=source/lgrind.c source/lgutil.c source/lgrindef.c source/lgrindef.h \
 	source/regexp.c source/regexp.h source/v2lg.c \
 	source/retest.c source/lgrind.1 source/lgrindef.5 source/Makefile \

textproc/lgrind/patches/patch-lgrind_dtx

@@ -21,3 +21,12 @@ Index: lgrind.dtx
  % \title{The \LG{} package\thanks{This file
  %         has version number \fileversion, last
  %         revised \filedate.}}
+@@ -537,7 +537,7 @@
+ % The meta-symbols and their meanings are:
+ % \begin{description}
+ % \item[\$] The end of a line
+-% \item[\^] The beginning of a line
++% \item[\^{}] The beginning of a line
+ % \item[$\backslash$d] A delimiter (space, tab, newline, start of line)
+ % \item[$\backslash$a] Matches any string of symbols (like `.*' in lex)
+ % \item[$\backslash$p] Matches any identifier. In a procedure definition