production code refactored

TDD-pure-function/src/main/java/de/edu/hsfulda/ciip/tdd/BownlingCalculator.java

@@ -6,10 +6,10 @@ import java.util.regex.Pattern;
 public class BownlingCalculator {
 
 	public int evaluate(String listOfThrows) {
-		Matcher matcher = Pattern.compile("\\d").matcher(listOfThrows);
 		int sum =0;
-		while (matcher.find()) {
-			sum+=Integer.parseInt(matcher.group());
+		Matcher singleDigit = Pattern.compile("\\d").matcher(listOfThrows);
+		while (singleDigit.find()) {
+			sum+=Integer.parseInt(singleDigit.group());
 		}
 		return sum;
 	}