infer: fix dead store, and uninitialized value errors.

Author: philljj

src/ssl.c

@@ -20411,7 +20411,6 @@ WOLFSSL_CTX* wolfSSL_set_SSL_CTX(WOLFSSL* ssl, WOLFSSL_CTX* ctx)
         }
 
         ssl->buffers.weOwnCert = 1;
-        ret = WOLFSSL_SUCCESS;
     }
     if (ctx->certChain != NULL) {
         if (ssl->buffers.certChain != NULL) {
@@ -20425,7 +20424,6 @@ WOLFSSL_CTX* wolfSSL_set_SSL_CTX(WOLFSSL* ssl, WOLFSSL_CTX* ctx)
         }
 
         ssl->buffers.weOwnCertChain = 1;
-        ret = WOLFSSL_SUCCESS;
     }
 #else
     /* ctx owns certificate, certChain and key */

src/tls13.c

@@ -8568,6 +8568,8 @@ static int SendTls13Certificate(WOLFSSL* ssl)
     WOLFSSL_START(WC_FUNC_CERTIFICATE_SEND);
     WOLFSSL_ENTER("SendTls13Certificate");
 
+    XMEMSET(extSz, 0, sizeof(extSz));
+
     ssl->options.buildingMsg = 1;
 
 #ifdef WOLFSSL_POST_HANDSHAKE_AUTH

tests/api.c

@@ -5031,7 +5031,7 @@ static int test_wolfSSL_CTX_use_certificate_chain_buffer_format(void)
     WOLFSSL* ssl = NULL;
     const char* cert = "./certs/server-cert.pem";
     unsigned char* buf = NULL;
-    size_t len;
+    size_t len = 0;
 
     ExpectIntEQ(load_file(cert, &buf, &len), 0);