From c82a14c252e10081afe930d134afc67bc570ba51 Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Thu, 16 Apr 2020 16:44:20 +0100
Subject: [PATCH] Nasal: fix build on non-C99 mode

It seems GCC at least is strict about C99 mode.
---
 simgear/nasal/lib.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/simgear/nasal/lib.c b/simgear/nasal/lib.c
index 2250538e..67619909 100644
--- a/simgear/nasal/lib.c
+++ b/simgear/nasal/lib.c
@@ -219,7 +219,8 @@ static naRef f_vecindex(naContext c, naRef me, int argc, naRef* args)
     if(naIsNil(vec) || naIsNil(value)) ARGERR();
     if(!naIsVector(vec)) return naNil();
     const int len = naVec_size(vec);
-    for(int i=0; i<len; i++) {
+    int i;
+    for(i=0; i<len; i++) {
         if (naEqual(naVec_get(vec, i), value))
             return naNum(i);
     }