package/luv: fix build with gcc 4.8

Fixes:
 - http://autobuild.buildroot.org/results/83b34e606b128546da8a70836d039090e334a1ec

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[yann.morin.1998@free.fr: mark patch accepted upstream]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/luv/0001-src-lreq.c-fix-build-with-gcc-4.8.patch

@@ -0,0 +1,43 @@
+From d05134115ec8fcfc87188899cec336a8b4df7e62 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 22 Feb 2020 22:17:19 +0100
+Subject: [PATCH] src/lreq.c: fix build with gcc 4.8
+
+Since commit 3e34390cc15101d7fc46ea26f5adf9ac022c2029, build fails with
+gcc 4.8.3 on:
+
+In file included from /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output/build/luv-1.34.1-1/src/luv.c:27:0:
+/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output/build/luv-1.34.1-1/src/lreq.c: In function 'luv_cleanup_req':
+/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-0/output/build/luv-1.34.1-1/src/lreq.c:70:5: error: 'for' loop initial declarations are only allowed in C99 mode
+     for (int i = 0; ((int*)(data->data))[i] != LUA_NOREF; i++) {
+     ^
+
+Fixes:
+ - http://autobuild.buildroot.org/results/83b34e606b128546da8a70836d039090e334a1ec
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Accepted status: https://github.com/luvit/luv/pull/456]
+---
+ src/lreq.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/lreq.c b/src/lreq.c
+index c8e07eb..b12ec4f 100644
+--- a/src/lreq.c
++++ b/src/lreq.c
+@@ -64,10 +64,11 @@ static void luv_fulfill_req(lua_State* L, luv_req_t* data, int nargs) {
+ }
+ 
+ static void luv_cleanup_req(lua_State* L, luv_req_t* data) {
++  int i;
+   luaL_unref(L, LUA_REGISTRYINDEX, data->req_ref);
+   luaL_unref(L, LUA_REGISTRYINDEX, data->callback_ref);
+   if (data->data_ref == LUV_REQ_MULTIREF) {
+-    for (int i = 0; ((int*)(data->data))[i] != LUA_NOREF; i++) {
++    for (i = 0; ((int*)(data->data))[i] != LUA_NOREF; i++) {
+       luaL_unref(L, LUA_REGISTRYINDEX, ((int*)(data->data))[i]);
+     }
+   }
+-- 
+2.25.0
+