[master] fix uninitialized memory in mem_test.c

diff --git a/lib/isc/tests/mem_test.c b/lib/isc/tests/mem_test.c
index f95fdb62b5927ca3fb04448a0d2004bbc4abf9c1..c4b5e9aacbd1678d930ac60feb65215412a535b1 100644 (file)
--- a/lib/isc/tests/mem_test.c
+++ b/lib/isc/tests/mem_test.c
@@ -220,6 +220,7 @@ ATF_TC_BODY(isc_mem_recordflag, tc) {
        isc_mem_destroy(&mctx2);
        isc_stdio_close(f);
 
+       memset(buf, 0, sizeof(buf));
        result = isc_stdio_open("mem.output", "r", &f);
        ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
        result = isc_stdio_read(buf, sizeof(buf), 1, f, &size);