Fix .app.src.script autopatch when no .app.src is present

Thanks Luke Bakken for the report!

core/deps.mk

@@ -649,9 +649,12 @@ endef
 define dep_autopatch_appsrc_script.erl
 	AppSrc = "$(call core_native_path,$(DEPS_DIR)/$1/src/$1.app.src)",
 	AppSrcScript = AppSrc ++ ".script",
-	{ok, Conf0} = file:consult(AppSrc),
+	Conf1 = case file:consult(AppSrc) of
+		{ok, Conf0} -> Conf0;
+		{error, enoent} -> []
+	end,
 	Bindings0 = erl_eval:new_bindings(),
-	Bindings1 = erl_eval:add_binding('CONFIG', Conf0, Bindings0),
+	Bindings1 = erl_eval:add_binding('CONFIG', Conf1, Bindings0),
 	Bindings = erl_eval:add_binding('SCRIPT', AppSrcScript, Bindings1),
 	Conf = case file:script(AppSrcScript, Bindings) of
 		{ok, [C]} -> C;