Merge pull request #15 from axiomhq/fix/flusher-conditional

replace f.events check with batch check

Author: dasfmi

README.md

@@ -49,7 +49,7 @@ For more detail on how to disable the CloudWatch logging, see the [Axiom documen
 $ aws lambda update-function-configuration --function-name my-function \
     --layers arn:aws:lambda:<AWS_REGION>:694952825951:layer:axiom-extension-<ARCH>:<VERSION>
 ```
-* Use the **latest** version number specified on the [Releases](https://github.com/axiomhq/axiom-lambda-extension/releases) page for the `VERSION` parameter. For example, `3`.
+* Use the **latest** version number specified on the [Releases](https://github.com/axiomhq/axiom-lambda-extension/releases) page for the `VERSION` parameter. For example, `4`.
 * For more detail on `AWS_REGION` and `ARCH` parameters, expand the table below:
 
 <details>

flusher/flusher.go

@@ -75,7 +75,7 @@ func (f *Axiom) Flush() {
 	f.eventsLock.Unlock()
 
 	f.lastFlushTime = time.Now()
-	if len(f.events) == 0 {
+	if len(batch) == 0 {
 		return
 	}