Add constant for min bufsize for timeout encoding
diff --git a/test/core/transport/chttp2/timeout_encoding_test.c b/test/core/transport/chttp2/timeout_encoding_test.c
index 4bb84e3..ffa0070 100644
--- a/test/core/transport/chttp2/timeout_encoding_test.c
+++ b/test/core/transport/chttp2/timeout_encoding_test.c
@@ -43,7 +43,7 @@
#define LOG_TEST() gpr_log(GPR_INFO, "%s", __FUNCTION__)
static void assert_encodes_as(gpr_timespec ts, const char *s) {
- char buffer[32];
+ char buffer[GRPC_CHTTP2_TIMEOUT_ENCODE_MIN_BUFSIZE];
grpc_chttp2_encode_timeout(ts, buffer);
gpr_log(GPR_INFO, "check '%s' == '%s'", buffer, s);
GPR_ASSERT(0 == strcmp(buffer, s));