deps: ICU 61.1 bump

- Update to released ICU 61.1, including:
  - CLDR 33 (many new languages and data improvements)
  - Many small API additions, improvements, and bug fixes
  - note: 'icu::' namespace is no longer used by default
   (Necessated https://github.com/nodejs/node/pull/18667 )

PR-URL: https://github.com/nodejs/node/pull/19621
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 0 insertions, 24 deletions

diff --git a/deps/icu-small/source/common/cmemory.cpp b/deps/icu-small/source/common/cmemory.cpp
index 300279c243..0b7e432c4d 100644
--- a/deps/icu-small/source/common/cmemory.cpp
+++ b/deps/icu-small/source/common/cmemory.cpp
@@ -41,30 +41,6 @@ static int n=0;
 static long b=0;
 #endif
 
-#if U_DEBUG
-
-static char gValidMemorySink = 0;
-
-U_CAPI void uprv_checkValidMemory(const void *p, size_t n) {
-    /*
-     * Access the memory to ensure that it's all valid.
-     * Load and save a computed value to try to ensure that the compiler
-     * does not throw away the whole loop.
-     * A thread analyzer might complain about un-mutexed access to gValidMemorySink
-     * which is true but harmless because no one ever uses the value in gValidMemorySink.
-     */
-    const char *s = (const char *)p;
-    char c = gValidMemorySink;
-    size_t i;
-    U_ASSERT(p != NULL);
-    for(i = 0; i < n; ++i) {
-        c ^= s[i];
-    }
-    gValidMemorySink = c;
-}
-
-#endif  /* U_DEBUG */
-
 U_CAPI void * U_EXPORT2
 uprv_malloc(size_t s) {
 #if U_DEBUG && defined(UPRV_MALLOC_COUNT)