Error if project has empty Lua module

[ekharkunov]

Steps to reproduce:

1. Open project
2. Add empty Lua module
3. Compile project

Result:

2023-05-22 21:28:18.538 ERROR default    editor.code.script - {:line 516, :message "Lua preprocessing failed for file '/main/empty.lua'. Check the editor logs for exception info."}
java.lang.Exception: /main/empty.lua:1 mismatched input '<EOF>' expecting {'IF', 'ELSE', 'ENDIF', TEXT}
	at com.defold.extension.pipeline.LuaPreprocessor.preprocess(LuaPreprocessor.java:93)
	at editor.code.preprocessors$run_lua_preprocessor.invokeStatic(preprocessors.clj:92)
	at editor.code.preprocessors$preprocess_lua$fn__27257.invoke(preprocessors.clj:165)
	at clojure.lang.PersistentVector.reduce(PersistentVector.java:343)
	at clojure.core$reduce.invokeStatic(core.clj:6827)
	at editor.code.preprocessors$preprocess_lua.invokeStatic(preprocessors.clj:163)
	at editor.code.preprocessors$preprocess_lua_lines.invokeStatic(preprocessors.clj:171)
	at editor.code.script$fn__70522$fn__70527.invoke(script.clj:509)
	at editor.code.script$fn__70522.invokeStatic(script.clj:509)
	at editor.code.script$fn__70522.invoke(script.clj:499)
	at clojure.lang.AFn.applyToHelper(AFn.java:154)
	at clojure.lang.AFn.applyTo(AFn.java:144)
	at clojure.lang.AFunction$1.doInvoke(AFunction.java:31)
	at clojure.lang.RestFn.invoke(RestFn.java:408)
	at clojure.lang.Var.invoke(Var.java:384)
	at editor.code.script$ScriptNode$behavior$build_targets$fn__70645.invoke(script.clj:575)
	at internal.node$trace_expr$fn__7813.invoke(node.clj:38)
	at internal.node$trace_expr.invokeStatic(node.clj:38)
	at editor.code.script$ScriptNode$behavior$build_targets.invokeStatic(script.clj:575)
	at editor.code.script$ScriptNode$behavior$build_targets.invoke(script.clj:575)
	at clojure.lang.Var.invoke(Var.java:393)
	at internal.node.NodeImpl.produce_value(node.clj:295)
	at internal.node$node_value.invokeStatic(node.clj:454)
	at internal.system$node_value.invokeStatic(system.clj:354)
	at dynamo.graph$do_node_value.invokeStatic(graph.clj:824)
	at dynamo.graph$node_value.invokeStatic(graph.clj:827)
	at editor.build$build_project_BANG_$fn__37787.invoke(build.clj:53)
	at clojure.core$map$fn__5851.invoke(core.clj:2755)
	at clojure.lang.LazySeq.sval(LazySeq.java:42)
	at clojure.lang.LazySeq.seq(LazySeq.java:51)
	at clojure.lang.Cons.next(Cons.java:39)
	at clojure.lang.RT.next(RT.java:709)
	at clojure.core$next__5371.invokeStatic(core.clj:64)
	at clojure.core$dorun.invokeStatic(core.clj:3142)
	at clojure.core$doall.invokeStatic(core.clj:3148)
	at editor.build$batched_pmap$fn__37776.invoke(build.clj:25)
	at clojure.core$pmap$fn__8447$fn__8448.invoke(core.clj:7022)
	at clojure.core$binding_conveyor_fn$fn__5739.invoke(core.clj:2030)
	at clojure.lang.AFn.call(AFn.java:18)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

Expected result
No error

Example project
extension-lua-preprocessor_repro.zip