Fix over-poping and only push the core once

1 files changed, 11 insertions, 8 deletions

diff --git a/src/script/cpp_api/s_async.cpp b/src/script/cpp_api/s_async.cpp
index 0b19572c2..ef84d5037 100644
--- a/src/script/cpp_api/s_async.cpp
+++ b/src/script/cpp_api/s_async.cpp
@@ -262,6 +262,12 @@ void* AsyncWorkerThread::Thread()
 		abort();
 	}
 
+	lua_getglobal(L, "core");
+	if (lua_isnil(L, -1)) {
+		errorstream << "Unable to find core within async environment!";
+		abort();
+	}
+
 	// Main loop
 	while (!StopRequested()) {
 		// Wait for job
@@ -271,12 +277,6 @@ void* AsyncWorkerThread::Thread()
 			continue;
 		}
 
-		lua_getglobal(L, "core");
-		if (lua_isnil(L, -1)) {
-			errorstream << "Unable to find core within async environment!";
-			abort();
-		}
-
 		lua_getfield(L, -1, "job_processor");
 		if (lua_isnil(L, -1)) {
 			errorstream << "Unable to get async job processor!" << std::endl;
@@ -303,13 +303,16 @@ void* AsyncWorkerThread::Thread()
 			toProcess.serializedResult = std::string(retval, length);
 		}
 
-		// Pop core, job_processor, and retval
-		lua_pop(L, 3);
+		lua_pop(L, 1);  // Pop retval
 
 		// Put job result
 		jobDispatcher->putJobResult(toProcess);
 	}
+
+	lua_pop(L, 1);  // Pop core
+
 	log_deregister_thread();
+
 	return 0;
 }