deps: icu 63.1 bump (CLDR 34)

- Full release notes: http://site.icu-project.org/download/63

Fixes: https://github.com/nodejs/node/issues/22344

PR-URL: https://github.com/nodejs/node/pull/23715
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/deps/icu-small/source/tools/toolutil/filetools.cpp b/deps/icu-small/source/tools/toolutil/filetools.cpp
index 176a791b0d..6e88c94b52 100644
--- a/deps/icu-small/source/tools/toolutil/filetools.cpp
+++ b/deps/icu-small/source/tools/toolutil/filetools.cpp
@@ -134,7 +134,7 @@ static int32_t whichFileModTimeIsLater(const char *file1, const char *file2) {
 /* Swap the file separater character given with the new one in the file path. */
 U_CAPI void U_EXPORT2
 swapFileSepChar(char *filePath, const char oldFileSepChar, const char newFileSepChar) {
-    for (int32_t i = 0, length = uprv_strlen(filePath); i < length; i++) {
+    for (int32_t i = 0, length = static_cast<int32_t>(uprv_strlen(filePath)); i < length; i++) {
         filePath[i] = (filePath[i] == oldFileSepChar ) ? newFileSepChar : filePath[i];
     }
 }