Fix-forward a -Wconversion scudo bug.

Related to fd1721d8609791c89102bd7f922fe92056535157, fix up a
signed-unsigned type comparison bug.

GitOrigin-RevId: 79e96b2457fe4e1586effc36aab657c508c122cf
Change-Id: I3198fbaf9f6f7d80aaee6fbac32a9fac403ad0b6
diff --git a/standalone/tests/wrappers_c_test.cpp b/standalone/tests/wrappers_c_test.cpp
index 05e8e52..6235505 100644
--- a/standalone/tests/wrappers_c_test.cpp
+++ b/standalone/tests/wrappers_c_test.cpp
@@ -398,7 +398,7 @@
   EXPECT_NE(P, nullptr);
   MI = mallinfo();
   EXPECT_GE(MI.uordblks, Allocated + BypassQuarantineSize);
-  EXPECT_GT(MI.hblkhd, 0U);
+  EXPECT_GT(MI.hblkhd, static_cast<FieldType>(0));
   FieldType Free = MI.fordblks;
   free(P);
   MI = mallinfo();