Loop optimization

Author: dwalluck

src/main/java/com/github/packageurl/PackageURL.java

@@ -473,8 +473,11 @@ private static String uriEncode(final String source) {
         }
 
         StringBuilder sb = new StringBuilder(length * 3);
+        sb.append(source, 0, pos);
+
+        for (int i = pos; i < bytes.length; i++) {
+            byte b = bytes[i];
 
-        for (byte b : bytes) {
             if (isUnreserved(b)) {
                 sb.append((char) b);
             } else {