Update ICU to 58.1

source/i18n/vtzone.cpp

Index: source/i18n/vtzone.cpp
diff --git a/source/i18n/vtzone.cpp b/source/i18n/vtzone.cpp
index 426810ec32257e1a6ab70141d17b490e206987ce..e0621cc07bcec32ccf60b08cd232a460d0d8bb74 100644
--- a/source/i18n/vtzone.cpp
+++ b/source/i18n/vtzone.cpp
@@ -1,6 +1,8 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
-* Copyright (C) 2007-2013, International Business Machines Corporation and
+* Copyright (C) 2007-2016, International Business Machines Corporation and
 * others. All Rights Reserved.
 *******************************************************************************
 */
@@ -538,7 +540,7 @@ static TimeZoneRule* createRuleByRRULE(const UnicodeString& zonename, int rawOff
     UnicodeString rrule = *((UnicodeString*)dates->elementAt(0));
     int32_t month, dayOfWeek, nthDayOfWeek, dayOfMonth = 0;
     int32_t days[7];
-    int32_t daysCount = sizeof(days)/sizeof(days[0]);
+    int32_t daysCount = UPRV_LENGTHOF(days);
     UDate until;
 
     parseRRULE(rrule, month, dayOfWeek, nthDayOfWeek, days, daysCount, until, status);
@@ -615,7 +617,7 @@ static TimeZoneRule* createRuleByRRULE(const UnicodeString& zonename, int rawOff
             UDate tmp_until;
             int32_t tmp_month, tmp_dayOfWeek, tmp_nthDayOfWeek;
             int32_t tmp_days[7];
-            int32_t tmp_daysCount = sizeof(tmp_days)/sizeof(tmp_days[0]);
+            int32_t tmp_daysCount = UPRV_LENGTHOF(tmp_days);
             parseRRULE(rrule, tmp_month, tmp_dayOfWeek, tmp_nthDayOfWeek, tmp_days, tmp_daysCount, tmp_until, status);
             if (U_FAILURE(status)) {
                 return NULL;