utils tests: fix sign comparison problem

This test compares a guint8 and a gchar with '==' which fails when comparing
240 to -16, even though these are the same byte value.  Add an explicit
'guchar' cast to correct the problem.

https://bugs.freedesktop.org/show_bug.cgi?id=74754

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/util.c b/tests/util.c
index ecd83eb..e090f5c 100644
--- a/tests/util.c
+++ b/tests/util.c
@@ -150,7 +150,7 @@ static void test_set_bit(void)
             }
         }
         for (j = 0 ; j < bytes; ++j) {
-            g_assert(dest[j] == tests[i].dest[j]);
+            g_assert(dest[j] == (guchar) tests[i].dest[j]);
         }
         g_free(dest);
     }