clear interrupted flag instead of exiting runtime

Author: Alexander Smirnov

aws-lambda-java-runtime-interface-client/src/main/java/com/amazonaws/services/lambda/runtime/api/client/AWSLambda.java

@@ -238,9 +238,7 @@ private static void startRuntime(String handler, LambdaLogger lambdaLogger) thro
             try {
                 payload = requestHandler.call(request);
                 runtimeClient.postInvocationResponse(request.getId(), payload.toByteArray());
-                if (Thread.currentThread().isInterrupted()) {
-                    shouldExit = true;
-                }
+                boolean ignored = Thread.interrupted(); // clear interrupted flag in case if it was set by user's code
             } catch (UserFault f) {
                 userFault = f;
                 UserFault.filterStackTrace(f);