Fix issue 355 by adding a call to file.deleteOnExit().

Author: anthonyms

src/main/java/org/owasp/esapi/waf/internal/InterceptingServletOutputStream.java

@@ -56,7 +56,10 @@ public InterceptingServletOutputStream(ServletOutputStream os, boolean buffered)
 		 * the prefix and suffix small for less processing. The "oew" is intended
 		 * to stand for "OWASP ESAPI WAF" and the "hop" for HTTP output.
 		 */
-		this.out = new RandomAccessFile ( File.createTempFile("oew", ".hop"), "rw" ); 
+		File tempFile= File.createTempFile("oew", ".hop");
+		this.out = new RandomAccessFile (tempFile, "rw" ); 
+		tempFile.deleteOnExit();
+		
 	}
 
 	public void reset() throws IOException {