updated for version 7.4.620
Problem:    Compiler warning for unitinialized variable. (Tony Mechelynck)
Solution:   Initialize "did_free". (Ben Fritz)
diff --git a/src/eval.c b/src/eval.c
index b8288c2..d468403 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -6815,7 +6815,7 @@
     win_T	*wp;
     int		i;
     funccall_T	*fc, **pfc;
-    int		did_free;
+    int		did_free = FALSE;
     int		did_free_funccal = FALSE;
 #ifdef FEAT_WINDOWS
     tabpage_T	*tp;