Add suggestion from Bruce

Author: amarziali

dd-java-agent/agent-tooling/src/main/java/datadog/trace/agent/tooling/bytebuddy/matcher/ProxyClassIgnores.java

@@ -5,24 +5,16 @@ public class ProxyClassIgnores {
   private ProxyClassIgnores() {}
 
   public static boolean isIgnored(String name) {
-    int last = -1;
-    int idx;
-    while (true) {
-      idx = name.indexOf('$', last + 1);
-      if (idx < 0) {
-        break;
-      }
+    for (int last = -1, idx; (idx = name.indexOf('$', last + 1)) >= 0; last = idx) {
       if (last < 0 && name.contains("CGLIB$$")) {
         // check this once
         return true;
       }
       if (idx == last + 1) {
         // skip the trie if consecutive $$ since, to be efficient, we can match prefixes from the
         // first dollar
-        last = idx;
         continue;
       }
-      last = idx;
       if (ProxyIgnoredClassNameTrie.apply(name, idx) == 1) {
         return true;
       }