toString: close tabbed print writer to flush it

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1256 379699f6-c40d-0410-875b-85095c16579e

jode/jode/expr/Expression.java

@@ -320,6 +320,7 @@ public abstract class Expression {
 	    java.io.StringWriter strw = new java.io.StringWriter();
 	    TabbedPrintWriter writer = new TabbedPrintWriter(strw);
 	    dumpExpression(writer);
+	    writer.close();
 	    return strw.toString();
 	} catch (java.io.IOException ex) {
 	    return "/*IOException*/"+super.toString();