Update ICU to 54.1 step 1

source/tools/tzcode/ialloc.c

Index: source/tools/tzcode/ialloc.c
diff --git a/source/tools/tzcode/ialloc.c b/source/tools/tzcode/ialloc.c
index 1fc2035f45292b2e8ea101bb681b49bded5ca0c0..b6f018897b42fae10a040189ff93c478a3f7a7f5 100644
--- a/source/tools/tzcode/ialloc.c
+++ b/source/tools/tzcode/ialloc.c
@@ -3,49 +3,12 @@
 ** 2006-07-17 by Arthur David Olson.
 */
 
-#ifndef lint
-#ifndef NOID
-static char	elsieid[] = "@(#)ialloc.c	8.30";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
 /*LINTLIBRARY*/
 
 #include "private.h"
 
-#define nonzero(n)	(((n) == 0) ? 1 : (n))
-
-char *
-imalloc(n)
-const int	n;
-{
-	return malloc((size_t) nonzero(n));
-}
-
 char *
-icalloc(nelem, elsize)
-int	nelem;
-int	elsize;
-{
-	if (nelem == 0 || elsize == 0)
-		nelem = elsize = 1;
-	return calloc((size_t) nelem, (size_t) elsize);
-}
-
-void *
-irealloc(pointer, size)
-void * const	pointer;
-const int	size;
-{
-	if (pointer == NULL)
-		return imalloc(size);
-	return realloc((void *) pointer, (size_t) nonzero(size));
-}
-
-char *
-icatalloc(old, new)
-char * const		old;
-const char * const	new;
+icatalloc(char *const old, const char *const new)
 {
 	register char *	result;
 	register int	oldsize, newsize;
@@ -56,31 +19,14 @@ const char * const	new;
 	else if (newsize == 0)
 		return old;
 	else	oldsize = strlen(old);
-	if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
+	if ((result = realloc(old, oldsize + newsize + 1)) != NULL)
 		if (new != NULL)
 			(void) strcpy(result + oldsize, new);
 	return result;
 }
 
 char *
-icpyalloc(string)
-const char * const	string;
-{
-	return icatalloc((char *) NULL, string);
-}
-
-void
-ifree(p)
-char * const	p;
-{
-	if (p != NULL)
-		(void) free(p);
-}
-
-void
-icfree(p)
-char * const	p;
+icpyalloc(const char *const string)
 {
-	if (p != NULL)
-		(void) free(p);
+	return icatalloc(NULL, string);
 }