Add missing prototypes.

Partially fixes build with -Wmissing-prototypes.

Change-Id: If04d8fe7cbf068883485e95bd5ea6cdab6743e46
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Reviewed-on: https://boringssl-review.googlesource.com/7513
Reviewed-by: David Benjamin <davidben@google.com>

include/openssl/dh.h

@@ -204,6 +204,16 @@ OPENSSL_EXPORT int DH_set_ex_data(DH *d, int idx, void *arg);
 OPENSSL_EXPORT void *DH_get_ex_data(DH *d, int idx);
 
 
+/* Deprecated functions. */
+
+/* DH_generate_parameters behaves like |DH_generate_parameters_ex|, which is
+ * what you should use instead. It returns NULL on error, or a newly-allocated
+ * |DH| on success. This function is provided for compatibility only. */
+OPENSSL_EXPORT DH *DH_generate_parameters(int prime_len, int generator,
+                                          void (*callback)(int, int, void *),
+                                          void *cb_arg);
+
+
 struct dh_st {
   BIGNUM *p;
   BIGNUM *g;

include/openssl/x509v3.h

@@ -647,6 +647,7 @@ OPENSSL_EXPORT int X509V3_add_standard_extensions(void);
 OPENSSL_EXPORT STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line);
 OPENSSL_EXPORT void *X509V3_EXT_d2i(X509_EXTENSION *ext);
 OPENSSL_EXPORT void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx);
+OPENSSL_EXPORT int X509V3_EXT_free(int nid, void *ext_data);
 
 
 OPENSSL_EXPORT X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc);