small metric blacklist fix

src/de/tud/kom/p2psim/impl/analyzer/metric/output/AbstractOutput.java

@@ -101,8 +101,8 @@ public abstract class AbstractOutput implements MetricOutput {
 	 */
 	public void setBlacklist(String blacklist) {
 		this.blacklist = blacklist.split(";|;\\n");
-		for (String string : this.blacklist)
-			string = string.replaceAll("\\s+", "");
+		for (int i = 0; i < this.blacklist.length; i++)
+			this.blacklist[i] = this.blacklist[i].replaceAll("\\s+", "");
 	}
 
 	public void setWhitelist(String whitelist) {