test: silence a coverity report

We check the actual contents of the file on the line after but we
might as well also check the number of bytes read here.

Found by coverity. Fixes: CID#1237521

diff --git a/src/test/test-fileio.c b/src/test/test-fileio.c
index e69706c3f872bd0d7a3ee9f94e0743bb7eb63979..92aa794a9513a094b7eee19e2763bf5963acc36e 100644 (file)
--- a/src/test/test-fileio.c
+++ b/src/test/test-fileio.c
@@ -325,7 +325,7 @@ static void test_write_string_file(void) {
 
         assert_se(write_string_file(fn, "boohoo") == 0);
 
-        assert_se(read(fd, buf, sizeof(buf)));
+        assert_se(read(fd, buf, sizeof(buf)) == 7);
         assert_se(streq(buf, "boohoo\n"));
 
         unlink(fn);