Commit 8dbf306663 for openssl.org

commit 8dbf306663c73f5bcc9e49b6edb1bc48d18ea7ff
Author: Neil Horman <nhorman@openssl.org>
Date:   Fri Jan 16 15:33:11 2026 -0500

    zero buffers in sslapitest

    valgrind gripes about this, as its possible to reach the TEST_mem_eq
    test without ever having initalized the buffer

    Reviewed-by: Saša Nedvědický <sashan@openssl.org>
    Reviewed-by: Norbert Pocs <norbertp@openssl.org>
    MergeDate: Thu Jan 29 16:37:35 2026
    (Merged from https://github.com/openssl/openssl/pull/29573)

diff --git a/test/sslapitest.c b/test/sslapitest.c
index 07a101313c..30dc17ce3c 100644
--- a/test/sslapitest.c
+++ b/test/sslapitest.c
@@ -9992,8 +9992,8 @@ static int test_multiblock_write(int test_index)
      * i.e: write_len >= 4 * frag_size
      * 9 * is chosen so that multiple multiblocks are used + some leftover.
      */
-    unsigned char msg[MULTIBLOCK_FRAGSIZE * 9];
-    unsigned char buf[sizeof(msg)], *p = buf;
+    unsigned char msg[MULTIBLOCK_FRAGSIZE * 9] = { 0 };
+    unsigned char buf[sizeof(msg)] = { 0 }, *p = buf;
     size_t readbytes, written, len;
     EVP_CIPHER *ciph = NULL;