Update ICU to 58.1

patches/vscomp.patch

Index: patches/vscomp.patch
diff --git a/patches/vscomp.patch b/patches/vscomp.patch
index de079f059876f839251ba78b0a27b96db884d57d..0cb098ec4c5fea1f85444bc73cc74774116fe359 100644
--- a/patches/vscomp.patch
+++ b/patches/vscomp.patch
@@ -37,29 +37,3 @@ index 0fb2b3e..007713e 100644
 +#endif
  
  U_NAMESPACE_END
-diff --git a/source/i18n/dtfmtsym.cpp b/source/i18n/dtfmtsym.cpp
-index e99670d..c9a3502 100644
---- a/source/i18n/dtfmtsym.cpp
-+++ b/source/i18n/dtfmtsym.cpp
-@@ -169,7 +169,7 @@ SharedDateFormatSymbols::~SharedDateFormatSymbols() {
- template<> U_I18N_API
- const SharedDateFormatSymbols *
-         LocaleCacheKey<SharedDateFormatSymbols>::createObject(
--                const void */*unusedContext*/, UErrorCode &status) const {
-+                const void * /*unusedContext*/, UErrorCode &status) const {
-     char type[256];
-     Calendar::getCalendarTypeFromLocale(fLoc, type, UPRV_LENGTHOF(type), status);
-     if (U_FAILURE(status)) {
-diff --git a/source/common/sharedobject.h b/source/common/sharedobject.h
-index 4402869..e5062cc 100644
---- a/source/common/sharedobject.h
-+++ b/source/common/sharedobject.h
-@@ -21,7 +21,7 @@ U_NAMESPACE_BEGIN
-  * update cache metrics. No other part of ICU, except for SharedObject,
-  * should directly call the methods of this base class.
-  */
--class UnifiedCacheBase : public UObject {
-+class U_COMMON_API UnifiedCacheBase : public UObject {
- public:
-     UnifiedCacheBase() { }
-