Internal refactoring

Author: garydgregory

src/main/java/org/apache/commons/io/filefilter/WildcardFileFilter.java

@@ -107,7 +107,7 @@ public Builder() {
 
         @Override
         public WildcardFileFilter get() {
-            return new WildcardFileFilter(ioCase, wildcards);
+            return new WildcardFileFilter(this);
         }
 
         /**
@@ -167,6 +167,10 @@ private static <T> T requireWildcards(final T wildcards) {
     /** Whether the comparison is case-sensitive. */
     private final IOCase ioCase;
 
+    private WildcardFileFilter(final Builder builder) {
+        this(builder.ioCase, builder.wildcards);
+    }
+
     /**
      * Constructs a new wildcard filter for an array of wildcards specifying case-sensitivity.
      *