need to free the head pointer of malloc'd memory (form anthm's working copy)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@3402 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_sofia/mod_sofia.c

@@ -4116,7 +4116,7 @@ static void sip_r_register(int status,
 	sip_www_authenticate_t const *authenticate = NULL;
 	switch_core_session_t *session = sofia_private ? sofia_private->session : NULL;
 	char const *realm = NULL; 
-	char *p = NULL, *qrealm = NULL;
+	char *p = NULL, *duprealm = NULL, *qrealm = NULL;
 	char const *scheme = NULL;
 	int index;
 	char *cur;
@@ -4157,7 +4157,8 @@ static void sip_r_register(int status,
 		return;
 	}
 
-	qrealm = strdup(realm);
+	duprealm = strdup(realm);
+	qrealm = duprealm;
 	
 	while(*qrealm && *qrealm == '"') {
 		*qrealm++;
@@ -4184,7 +4185,7 @@ static void sip_r_register(int status,
 		}
 	}
 
-	switch_safe_free(qrealm);
+	switch_safe_free(duprealm);
 
 	if (!oreg) {
 		return;