Add libssh2_free.

NEWS

@@ -1,3 +1,7 @@
+This release includes the following changes:
+
+ o Added libssh2_free()
+
 libssh2 1.2.7 (August 17, 2010)
 
 This release includes the following changes:

include/libssh2.h

@@ -420,6 +420,13 @@ LIBSSH2_API int libssh2_init(int flags);
  */
 LIBSSH2_API void libssh2_exit(void);
 
+/*
+ * libssh2_free()
+ *
+ * Deallocate memory allocated by earlier call to libssh2 functions.
+ */
+LIBSSH2_API void libssh2_free(LIBSSH2_SESSION *session, void *ptr)
+
 /* Session API */
 LIBSSH2_API LIBSSH2_SESSION *
 libssh2_session_init_ex(LIBSSH2_ALLOC_FUNC((*my_alloc)),

src/misc.c

@@ -1,5 +1,6 @@
 /* Copyright (c) 2004-2007 Sara Golemon <sarag@libssh2.org>
  * Copyright (c) 2009 by Daniel Stenberg
+ * Copyright (c) 2010  Simon Josefsson
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms,
@@ -352,6 +353,12 @@ size_t _libssh2_base64_encode(LIBSSH2_SESSION *session,
 }
 /* ---- End of Base64 Encoding ---- */
 
+LIBSSH2_API void
+libssh2_free(LIBSSH2_SESSION *session, void *ptr)
+{
+    LIBSSH2_FREE(session, ptr);
+}
+
 #ifdef LIBSSH2DEBUG
 LIBSSH2_API int
 libssh2_trace(LIBSSH2_SESSION * session, int bitmask)