UI/updater: Fix a few type size mismatch warnings

UI/win-update/updater/patch.cpp

@@ -256,7 +256,7 @@ try {
 
 	vector<uint8_t> newData;
 	try {
-		newData.resize(newsize);
+		newData.resize((size_t)newsize);
 	} catch (...) {
 		throw int(-1);
 	}

UI/win-update/updater/updater.cpp

@@ -1171,7 +1171,7 @@ static bool Update(wchar_t *cmdLine)
 	if (!RunDownloadWorkers(2))
 		return false;
 
-	if (completedUpdates != updates.size()) {
+	if ((size_t)completedUpdates != updates.size()) {
 		Status(L"Update failed to download all files.");
 		return false;
 	}