Fix warnings.

apps/pkcs12.c

@@ -815,6 +815,7 @@ int get_cert_chain (X509 *cert, X509_STORE *store, STACK_OF(X509) **chain)
 	*chain = chn;
 err:
 	X509_STORE_CTX_cleanup(&store_ctx);
+	*chain = NULL;
 	
 	return i;
 }	

apps/pkeyutl.c

@@ -99,7 +99,7 @@ int MAIN(int argc, char **argv)
 	int keysize = -1;
 
 	unsigned char *buf_in = NULL, *buf_out = NULL, *sig = NULL;
-	int buf_inlen, buf_outlen, siglen = -1;
+	int buf_inlen = 0, buf_outlen, siglen = -1;
 
 	int ret = 1, rv = -1;
 
@@ -539,7 +539,7 @@ static int do_keyop(EVP_PKEY_CTX *ctx, int pkey_op,
 		unsigned char *out, size_t *poutlen,
 		unsigned char *in, size_t inlen)
 	{
-	int rv;
+	int rv = 0;
 	switch(pkey_op)
 		{
 		case EVP_PKEY_OP_VERIFYRECOVER:

ssl/s3_lib.c

@@ -2048,7 +2048,7 @@ SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
 #ifndef OPENSSL_NO_TLSEXT
 #ifndef OPENSSL_NO_EC
 	int ec_ok, ec_nid;
-	unsigned char ec_search1, ec_search2;
+	unsigned char ec_search1 = 0, ec_search2 = 0;
 #endif /* OPENSSL_NO_EC */
 #endif /* OPENSSL_NO_TLSEXT */
 	CERT *cert;