www/hiawatha : Fix run errors on 13

Change regular expressions to POSIX-style.

References:
https://lists.freebsd.org/pipermail/freebsd-hackers/2021-April/057275.html

PR:	255182
Reported by:	ascilia@free.fr

www/hiawatha/files/patch-src_session.c

@@ -0,0 +1,27 @@
+--- src/session.c.orig	2021-04-27 07:15:50 UTC
++++ src/session.c
+@@ -33,15 +33,15 @@
+ static const struct {
+ 	const char *text;
+ } sqli_detection[] = {
+-	{"'\\s*(;\\s*)?--(\\s|')"},
+-	{"\\s+(and|or|xor|&&|\\|\\|)\\s*\\(?\\s*('|[0-9]|`?[a-z\\._-]+`?\\s*(=|like)|[a-z]+\\s*\\()"},
+-	{"\\s+(not\\s+)?in\\s*\\(\\s*['0-9]"},
+-	{"union(\\s+all)?(\\s*\\(\\s*|\\s+)select(`|\\s)"},
+-	{"select(\\s*`|\\s+)(\\*|[a-z0-9_\\, ]*)(`\\s*|\\s+)from(\\s*`|\\s+)[a-z0-9_\\.]*"},
+-	{"insert\\s+into(\\s*`|\\s+).*(`\\s*|\\s+)(values\\s*)?\\(.*\\)"},
+-	{"update(\\s*`|\\s+)[a-z0-9_\\.]*(`\\s*|\\s+)set(\\s*`|\\s+).*="},
+-	{"delete\\s+from(\\s*`|\\s+)[a-z0-9_\\.]*`?"},
+-	{"extractvalue\\s*\\(\\s*[0-9'\"@]"},
++	{"'[[:space:]]*(;[[:space:]]*)?--([[:space:]]|')"},
++	{"[[:space:]]+(and|or|xor|&&|\\|\\|)[[:space:]]*\\(?[[:space:]]*('|[0-9]|`?[a-z\\._-]+`?[[:space:]]*(=|like)|[a-z]+[[:space:]]*\\()"},
++	{"[[:space:]]+(not[[:space:]]+)?in[[:space:]]*\\([[:space:]]*['0-9]"},
++	{"union([[:space:]]+all)?([[:space:]]*\\([[:space:]]*|[[:space:]]+)select(`|[[:space:]])"},
++	{"select([[:space:]]*`|[[:space:]]+)(\\*|[a-z0-9_\\, ]*)(`[[:space:]]*|[[:space:]]+)from([[:space:]]*`|[[:space:]]+)[a-z0-9_\\.]*"},
++	{"insert[[:space:]]+into([[:space:]]*`|[[:space:]]+).*(`[[:space:]]*|[[:space:]]+)(values[[:space:]]*)?\\(.*\\)"},
++	{"update([[:space:]]*`|[[:space:]]+)[a-z0-9_\\.]*(`[[:space:]]*|[[:space:]]+)set([[:space:]]*`|[[:space:]]+).*="},
++	{"delete[[:space:]]+from([[:space:]]*`|[[:space:]]+)[a-z0-9_\\.]*`?"},
++	{"extractvalue[[:space:]]*\\([[:space:]]*[0-9'\"@]"},
+ 	{NULL}
+ };
+