Fix dangling lock (coverity)

libraries/librewrite/session.c

@@ -100,6 +100,9 @@ rewrite_session_init(
 		
 	session = calloc( sizeof( struct rewrite_session ), 1 );
 	if ( session == NULL ) {
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+		ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
 		return NULL;
 	}
 	session->ls_cookie = ( void * )cookie;
@@ -108,11 +111,13 @@ rewrite_session_init(
 #ifdef USE_REWRITE_LDAP_PVT_THREADS
 	if ( ldap_pvt_thread_mutex_init( &session->ls_mutex ) ) {
 		free( session );
+		ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
 		return NULL;
 	}
 	if ( ldap_pvt_thread_rdwr_init( &session->ls_vars_mutex ) ) {
 		ldap_pvt_thread_mutex_destroy( &session->ls_mutex );
 		free( session );
+		ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
 		return NULL;
 	}
 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
@@ -122,7 +127,7 @@ rewrite_session_init(
 	info->li_num_cookies++;
 
 #ifdef USE_REWRITE_LDAP_PVT_THREADS
-        ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
+	ldap_pvt_thread_rdwr_wunlock( &info->li_cookies_mutex );
 #endif /* USE_REWRITE_LDAP_PVT_THREADS */
 	
 	if ( rc != 0 ) {

libraries/librewrite/xmap.c

@@ -335,7 +335,11 @@ rewrite_xmap_apply(
 					&& ( p = strtok( NULL, "" ) ) ) {
 				val->bv_val = strdup( p );
 				if ( val->bv_val == NULL ) {
-					return REWRITE_ERR;
+#ifdef USE_REWRITE_LDAP_PVT_THREADS
+					ldap_pvt_thread_mutex_unlock( &map->lm_mutex );
+#endif /* USE_REWRITE_LDAP_PVT_THREADS */
+					rc = REWRITE_ERR;
+					goto rc_return;
 				}
 
 				val->bv_len = strlen( p );