contrib/pjsip: add missing patch for 2.4.5

Make sure to not include OpenSSL when GnuTLS is used.

Tuleap: #77
Change-Id: I6f3ee4b80471d2562c6c5ef1ebb17cdc0002760a

contrib/src/pjproject/gnutls.patch

@@ -3347,3 +3347,27 @@ index 40a5a1e..9237898 100644
  
  #define THIS_FILE		"ssl_sock_ossl.c"
  
+diff --git a/pjmedia/src/pjmedia/transport_srtp.c b/pjmedia/src/pjmedia/transport_srtp.c
+index ac74cb8..026d3a8 100644
+--- a/pjmedia/src/pjmedia/transport_srtp.c
++++ b/pjmedia/src/pjmedia/transport_srtp.c
+@@ -30,7 +30,8 @@
+ 
+ #if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
+ 
+-#if defined(PJ_HAS_SSL_SOCK) && (PJ_HAS_SSL_SOCK != 0)
++#if defined(PJ_HAS_SSL_SOCK) && PJ_HAS_SSL_SOCK != 0 && \
++    defined(PJ_HAS_TLS_SOCK) && PJ_HAS_TLS_SOCK == 0
+ #  include <openssl/rand.h>
+ 
+ /* Suppress compile warning of OpenSSL deprecation (OpenSSL is deprecated
+@@ -1098,7 +1099,8 @@ static pj_status_t generate_crypto_attr_value(pj_pool_t *pool,
+ 	    key_ok = PJ_TRUE;
+ 
+ 
+-#if defined(PJ_HAS_SSL_SOCK) && (PJ_HAS_SSL_SOCK != 0)
++#if defined(PJ_HAS_SSL_SOCK) && PJ_HAS_SSL_SOCK != 0 && \
++    defined(PJ_HAS_TLS_SOCK) && PJ_HAS_TLS_SOCK == 0
+ 
+ /* Include OpenSSL libraries for MSVC */
+ #  ifdef _MSC_VER