From 7c3c0b1013b40f9579256f03a058862253d5013d Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 29 Oct 2020 10:29:30 +1030
Subject: [PATCH] common: allow tal_arr_expand() to have an `n` argument.

It needs to use a non-clashing name for the internal var.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---
 common/utils.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/common/utils.h b/common/utils.h
index e1471c34d..fa63c6c88 100644
--- a/common/utils.h
+++ b/common/utils.h
@@ -47,9 +47,9 @@ void clear_softref_(const tal_t *outer, size_t outersize, void **ptr);
 /* Note: p is never a complex expression, otherwise this multi-evaluates! */
 #define tal_arr_expand(p, s)						\
 	do {								\
-		size_t n = tal_count(*(p));				\
-		tal_resize((p), n+1);					\
-		(*(p))[n] = (s);					\
+		size_t n_ = tal_count(*(p));				\
+		tal_resize((p), n_+1);					\
+		(*(p))[n_] = (s);					\
 	} while(0)
 
 /**