Author: Lars Mueller <lmuelle@suse.com>
Subject: no-return-in-nonvoid-function expand.c:1882
Reported upstream: http://bugs.exim.org/show_bug.cgi?id=1506

Index: exim-4.83/src/expand.c
===================================================================
--- exim-4.83.orig/src/expand.c
+++ exim-4.83/src/expand.c
@@ -1879,6 +1879,8 @@ switch (vp->type)
   #endif
 
   }
+
+return NULL;          /* Unknown variable name */
 }