patch 7.4.1668

Problem:    channel_get_all() does multiple allocations.
Solution:   Compute the size and allocate once.

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1668,
 /**/
     1667,
 /**/