nixpkgs/pkgs/tools/networking/dhcpcd/reload.patch

Fix segfault when reloading the configuration: free_globals() left the
ifac/ifdc variables at -1 instead of 0, causing a crash later in
splitv().

--- a/dhcpcd.c
+++ b/dhcpcd.c
@@ -143,16 +143,18 @@
 	if (ctx->ifac) {
 		for (ctx->ifac--; ctx->ifac >= 0; ctx->ifac--)
 			free(ctx->ifav[ctx->ifac]);
 		free(ctx->ifav);
 		ctx->ifav = NULL;
+		ctx->ifac = 0;
 	}
 	if (ctx->ifdc) {
 		for (ctx->ifdc--; ctx->ifdc >= 0; ctx->ifdc--)
 			free(ctx->ifdv[ctx->ifdc]);
 		free(ctx->ifdv);
 		ctx->ifdv = NULL;
+		ctx->ifdc = 0;
 	}
 
 #ifdef INET
 	if (ctx->dhcp_opts) {
 		for (opt = ctx->dhcp_opts;