move ECDSA_SIG definition

Reviewed-by: NRichard Levitte <levitte@openssl.org>

crypto/ec/ec_lcl.h

@@ -580,3 +580,8 @@ int ossl_ecdh_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
                           EC_KEY *ecdh,
                           void *(*KDF) (const void *in, size_t inlen,
                                         void *out, size_t *outlen));
+
+struct ECDSA_SIG_st {
+    BIGNUM *r;
+    BIGNUM *s;
+};

include/openssl/ec.h

@@ -999,6 +999,8 @@ int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
                      EC_KEY *ecdh, void *(*KDF) (const void *in, size_t inlen,
                                                  void *out, size_t *outlen));
 
+typedef struct ECDSA_SIG_st ECDSA_SIG;
+
 # define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
 
 # ifndef __cplusplus

include/openssl/ecdsa.h

@@ -75,11 +75,6 @@
 extern "C" {
 #endif
 
-typedef struct ECDSA_SIG_st {
-    BIGNUM *r;
-    BIGNUM *s;
-} ECDSA_SIG;
-
 /** Allocates and initialize a ECDSA_SIG structure
  *  \return pointer to a ECDSA_SIG structure or NULL if an error occurred
  */