Fix not obvious NPE

KostyaSha · KostyaSha · commit bf893a8e20c9 · 2015-08-19T00:08:53.000+03:00
diff --git a/docker-plugin/src/main/java/com/nirima/jenkins/plugins/docker/builder/DockerBuilderPublisher.java b/docker-plugin/src/main/java/com/nirima/jenkins/plugins/docker/builder/DockerBuilderPublisher.java
@@ -236,9 +236,11 @@ public String invoke(File f, VirtualChannel channel) throws IOException, Interru
 
                                 for (EventStreamItem item : response) {
                                     String text = item.getStream();
-                                    listener.getLogger().append(text);
-                                    if (text.startsWith("Successfully built ")) {
-                                        imageId = StringUtils.substringBetween(text, "Successfully built ", "\n").trim();
+                                    if (text != null) {
+                                        listener.getLogger().append(text);
+                                        if (text.startsWith("Successfully built ")) {
+                                            imageId = StringUtils.substringBetween(text, "Successfully built ", "\n").trim();
+                                        }
                                     }
                                 }
 

Original file line number	Diff line number	Diff line change
`@@ -236,9 +236,11 @@ public String invoke(File f, VirtualChannel channel) throws IOException, Interru`
`236`	`236`
`237`	`237`	`for (EventStreamItem item : response) {`
`238`	`238`	`String text = item.getStream();`
`239`		`- listener.getLogger().append(text);`
`240`		`- if (text.startsWith("Successfully built ")) {`
`241`		`- imageId = StringUtils.substringBetween(text, "Successfully built ", "\n").trim();`
	`239`	`+ if (text != null) {`
	`240`	`+ listener.getLogger().append(text);`
	`241`	`+ if (text.startsWith("Successfully built ")) {`
	`242`	`+ imageId = StringUtils.substringBetween(text, "Successfully built ", "\n").trim();`
	`243`	`+ }`
`242`	`244`	`}`
`243`	`245`	`}`
`244`	`246`