[PATH] spell.c (avoid call strlen repeatedly in loop.

Hi Mark,
Another example, can you take a look?

--- \dll\postgresql-12.0\a\backend\tsearch\spell.c Mon Sep 30 17:06:55 2019
+++ spell.c Sat Nov 09 05:55:23 2019
@@ -186,7 +186,7 @@
#define MAX_NORM 1024
#define MAXNORMLEN 256

-#define STRNCMP(s,p) strncmp( (s), (p), strlen(p) )
+#define STRNCMP(s,p) strncmp( (s), (p), sizeof(p) - 1 )
#define GETWCHAR(W,L,N,T) ( ((const uint8*)(W))[ ((T)==FF_PREFIX) ? (N) : ( (L) - 1 - (N) ) ] )
#define GETCHAR(A,N,T) GETWCHAR( (A)->repl, (A)->replen, N, T )

@@ -1220,31 +1220,31 @@
}

if (STRNCMP(recoded, "COMPOUNDFLAG") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("COMPOUNDFLAG"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("COMPOUNDFLAG") - 1,
FF_COMPOUNDFLAG);
else if (STRNCMP(recoded, "COMPOUNDBEGIN") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("COMPOUNDBEGIN"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("COMPOUNDBEGIN") - 1,
FF_COMPOUNDBEGIN);
else if (STRNCMP(recoded, "COMPOUNDLAST") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("COMPOUNDLAST"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("COMPOUNDLAST") - 1,
FF_COMPOUNDLAST);
/* COMPOUNDLAST and COMPOUNDEND are synonyms */
else if (STRNCMP(recoded, "COMPOUNDEND") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("COMPOUNDEND"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("COMPOUNDEND") - 1,
FF_COMPOUNDLAST);
else if (STRNCMP(recoded, "COMPOUNDMIDDLE") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("COMPOUNDMIDDLE"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("COMPOUNDMIDDLE") - 1,
FF_COMPOUNDMIDDLE);
else if (STRNCMP(recoded, "ONLYINCOMPOUND") == 0)
- addCompoundAffixFlagValue(Conf, recoded + strlen("ONLYINCOMPOUND"),
+ addCompoundAffixFlagValue(Conf, recoded + sizeof("ONLYINCOMPOUND") - 1,
FF_COMPOUNDONLY);
else if (STRNCMP(recoded, "COMPOUNDPERMITFLAG") == 0)
addCompoundAffixFlagValue(Conf,
- recoded + strlen("COMPOUNDPERMITFLAG"),
+ recoded + sizeof("COMPOUNDPERMITFLAG") - 1,
FF_COMPOUNDPERMITFLAG);
else if (STRNCMP(recoded, "COMPOUNDFORBIDFLAG") == 0)
addCompoundAffixFlagValue(Conf,
- recoded + strlen("COMPOUNDFORBIDFLAG"),
+ recoded + sizeof("COMPOUNDFORBIDFLAG") - 1,
FF_COMPOUNDFORBIDFLAG);
else if (STRNCMP(recoded, "FLAG") == 0)
{