fix compile error

ExtendedBounds cannot yet have its ParseFieldMatcher usage removed, reverted that bit.

Author: javanna

core/src/main/java/org/elasticsearch/search/aggregations/bucket/histogram/ExtendedBounds.java

@@ -20,6 +20,7 @@
 package org.elasticsearch.search.aggregations.bucket.histogram;
 
 import org.elasticsearch.common.ParseField;
+import org.elasticsearch.common.ParseFieldMatcherSupplier;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
@@ -44,7 +45,7 @@ public class ExtendedBounds implements ToXContent, Writeable {
     static final ParseField MIN_FIELD = new ParseField("min");
     static final ParseField MAX_FIELD = new ParseField("max");
 
-    public static final ConstructingObjectParser<ExtendedBounds, Void> PARSER = new ConstructingObjectParser<>(
+    public static final ConstructingObjectParser<ExtendedBounds, ParseFieldMatcherSupplier> PARSER = new ConstructingObjectParser<>(
             "extended_bounds", a -> {
         assert a.length == 2;
         Long min = null;