Fix warnings (note that gcc 4.2 has a bug that makes one of its

warnings hard to fix without major surgery).

crypto/evp/p5_crpt2.c

@@ -235,7 +235,7 @@ int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
 	const unsigned char *pbuf;
 	int saltlen, iter, plen;
 	int rv = 0;
-	unsigned int keylen;
+	unsigned int keylen = 0;
 	int prf_nid, hmac_md_nid;
 	PBKDF2PARAM *kdf = NULL;
 	const EVP_MD *prfmd;

crypto/evp/p_sign.c

@@ -80,8 +80,9 @@ int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, unsigned int *siglen,
 	{
 	unsigned char m[EVP_MAX_MD_SIZE];
 	unsigned int m_len;
-	int i,ok=0,v;
+	int i = 0,ok = 0,v;
 	MS_STATIC EVP_MD_CTX tmp_ctx;
+	EVP_PKEY_CTX *pkctx = NULL;
 
 	*siglen=0;
 	EVP_MD_CTX_init(&tmp_ctx);
@@ -93,7 +94,6 @@ int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, unsigned int *siglen,
 
 	if (ctx->digest->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
 		{
-		EVP_PKEY_CTX *pkctx = NULL;
 		size_t sltmp = (size_t)EVP_PKEY_size(pkey);
 		i = 0;
 		pkctx = EVP_PKEY_CTX_new(pkey, NULL);

crypto/evp/p_verify.c

@@ -67,8 +67,9 @@ int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
 	{
 	unsigned char m[EVP_MAX_MD_SIZE];
 	unsigned int m_len;
-	int i,ok=0,v;
+	int i = 0,ok = 0,v;
 	MS_STATIC EVP_MD_CTX tmp_ctx;
+	EVP_PKEY_CTX *pkctx = NULL;
 
 	EVP_MD_CTX_init(&tmp_ctx);
 	if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
@@ -79,7 +80,6 @@ int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
 
 	if (ctx->digest->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE)
 		{
-		EVP_PKEY_CTX *pkctx = NULL;
 		i = -1;
 		pkctx = EVP_PKEY_CTX_new(pkey, NULL);
 		if (!pkctx)