Avoid NPE in Screenshot/ReadBufferUtil

1 files changed, 5 insertions, 3 deletions

diff --git a/src/demo/ReadBufferUtil.java b/src/demo/ReadBufferUtil.java
index 1de61974b..9a2da0d7e 100644
--- a/src/demo/ReadBufferUtil.java
+++ b/src/demo/ReadBufferUtil.java
@@ -95,11 +95,13 @@ public class ReadBufferUtil {
     }
 
     @SuppressWarnings("deprecation")
-    public void dispose() {
+    public void dispose() {        
         readTexture.dispose();
         readTextureData = null;
-        readPixelBuffer.clear();
-        readPixelBuffer = null;
+        if(null != readPixelBuffer) {
+            readPixelBuffer.clear();
+            readPixelBuffer = null;
+        }
         readPixelSizeLast = 0;
     }