test/common: Fix signed comparison

Signed-off-by: Adam Emerson <aemerson@redhat.com>

diff --git a/src/test/common/test_hobject.cc b/src/test/common/test_hobject.cc
index 9f994cb7d95b5c78aaa55e3f129822e85947c00e..6916b9fce38a987a7834fe044ff83f56be88be3a 100644 (file)
--- a/src/test/common/test_hobject.cc
+++ b/src/test/common/test_hobject.cc
@@ -285,7 +285,7 @@ TEST(HObject, fmt_random)
 
     auto name_length = (i * 17) % 51;
     std::string name;
-    for (int j = 0; j < name_length; j++) {
+    for (int j = 0; std::cmp_less(j, name_length); j++) {
       name.push_back((i * name_length + j) % 256);
     }