Correct an eclipse warning around close(), and a related bug that this identified

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1589756 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/openxml4j/opc/OPCPackage.java

@@ -403,6 +403,11 @@ public abstract class OPCPackage implements RelationshipSource, Closeable {
 			revert();
 			return;
 		}
+		if (this.contentTypeManager == null) {
+		    logger.log(POILogger.WARN,
+		            "Unable to call close() on a package that hasn't been fully opened yet");
+		    return;
+		}
 
 		// Save the content
 		ReentrantReadWriteLock l = new ReentrantReadWriteLock();

src/ooxml/java/org/apache/poi/openxml4j/opc/ZipPackage.java

@@ -64,6 +64,10 @@ public final class ZipPackage extends Package {
     public ZipPackage() {
     	super(defaultPackageAccess);
     	this.zipArchive = null;
+    	
+    	try {
+    	    this.contentTypeManager = new ZipContentTypeManager(null, this);
+    	} catch (InvalidFormatException e) {}
     }
 
     /**

src/ooxml/java/org/apache/poi/xwpf/extractor/XWPFWordExtractor.java

@@ -73,7 +73,7 @@ public class XWPFWordExtractor extends POIXMLTextExtractor {
 	public static void main(String[] args) throws Exception {
 		if(args.length < 1) {
 			System.err.println("Use:");
-			System.err.println("  HXFWordExtractor <filename.docx>");
+			System.err.println("  XWPFWordExtractor <filename.docx>");
 			System.exit(1);
 		}
 		POIXMLTextExtractor extractor = 
@@ -81,6 +81,7 @@ public class XWPFWordExtractor extends POIXMLTextExtractor {
 					args[0]
 			));
 		System.out.println(extractor.getText());
+		extractor.close();
 	}
 	
     public String getText() {