do not highlight unused foreach parameter (IDEA-72671)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting7/Unused.java

@@ -19,4 +19,14 @@ class UnusedDeclBug {
             System.out.println(concern);
         } // end for
     }
+}
+
+class ForEachTest {
+  public static void main(String[] args) {
+    int count = 0;
+    for (String arg : args) {
+      count++;
+    }
+    System.out.println(count);
+  }
 }