Allocate sufficiently sized buffer for entire segment including the u…

…nencrypted section.

A real bug.  Per the specifications, the AES decryption
will occur only on complete 16 byte blocks, with the
remainder unencrypted.  The codes allocated a buffer
only big enough for the aes encrypted data, and when
it copied the remainder, it overflowed that buffer
(anywhere from 0 to 15 bytes).

Fixes coverity 1023889

(There is some chance coverity will not understand the fix)

Signed-off-by: Jean-Yves Avenard <jyavenard@mythtv.org>

mythtv/libs/libmythtv/HLS/httplivestreambuffer.cpp

@@ -289,7 +289,7 @@ class HLSSegment
         /* Decrypt data using AES-128 */
         int aeslen = m_data.size() & ~0xf;
         unsigned char iv[AES_BLOCK_SIZE];
-        char *decrypted_data = new char[aeslen];
+        char *decrypted_data = new char[m_data.size()];
         if (IV == NULL)
         {
             /*