Update ICU to 58.1

source/i18n/decimalformatpattern.h

Index: source/i18n/decimalformatpattern.h
diff --git a/source/i18n/decimalformatpattern.h b/source/i18n/decimalformatpattern.h
index a5a628cf90f04f972b59aa1f779582d955cab827..c8998f95f8f67cb91f08029f9230613a56cbf242 100644
--- a/source/i18n/decimalformatpattern.h
+++ b/source/i18n/decimalformatpattern.h
@@ -1,3 +1,5 @@
+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
 *******************************************************************************
 * Copyright (C) 1997-2015, International Business Machines Corporation and    *
@@ -28,7 +30,7 @@ enum CurrencySignCount {
 
 class DecimalFormatSymbols;
 
-struct DecimalFormatPattern : UMemory {
+struct DecimalFormatPattern : public UMemory {
   enum EPadPosition {
       kPadBeforePrefix,
       kPadAfterPrefix,
@@ -71,7 +73,7 @@ struct DecimalFormatPattern : UMemory {
   EPadPosition fPadPosition;
 };
 
-class DecimalFormatPatternParser : UMemory {
+class DecimalFormatPatternParser : public UMemory {
   public:
     DecimalFormatPatternParser();
     void useSymbols(const DecimalFormatSymbols& symbols);