Update ICU to 58.1

source/common/ucnv_lmb.c

Index: source/common/ucnv_lmb.c
diff --git a/source/common/ucnv_lmb.c b/source/common/ucnv_lmb.c
index 01d0aa15469d89bb776a8750a2f9e1550729c6dd..e4277909fe8ff5ba2470bcef989a9bf65979adbc 100644
--- a/source/common/ucnv_lmb.c
+++ b/source/common/ucnv_lmb.c
@@ -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) 2000-2015, International Business Machines
+*   Copyright (C) 2000-2016, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   file name:  ucnv_lmb.cpp
@@ -793,12 +795,16 @@ LMBCSConversionWorker (
    {
    case 4:
       *pLMBCS++ = (ulmbcs_byte_t)(value >> 24);
-   case 3: /*fall through*/
+      U_FALLTHROUGH;
+   case 3:
       *pLMBCS++ = (ulmbcs_byte_t)(value >> 16);
-   case 2: /*fall through*/
+      U_FALLTHROUGH;
+   case 2:
       *pLMBCS++ = (ulmbcs_byte_t)(value >> 8);
-   case 1: /*fall through*/
+      U_FALLTHROUGH;
+   case 1:
       *pLMBCS++ = (ulmbcs_byte_t)value;
+      U_FALLTHROUGH;
    default:
       /* will never occur */
       break;