FUNCTOR-29 fix checkstyle errors (tabs)

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/functor/trunk@1537909 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/core/src/main/java/org/apache/commons/functor/core/collection/IsElementOf.java b/core/src/main/java/org/apache/commons/functor/core/collection/IsElementOf.java
index bfe11b6..0b0f20a 100644
--- a/core/src/main/java/org/apache/commons/functor/core/collection/IsElementOf.java
+++ b/core/src/main/java/org/apache/commons/functor/core/collection/IsElementOf.java
@@ -38,7 +38,7 @@
     // static members
     //---------------------------------------------------------------
 
-	/**
+    /**
      * A static {@link IsElementOf} instance reference.
      */
     private static final IsElementOf<Object, Object> INSTANCE = new IsElementOf<Object, Object>();
diff --git a/core/src/main/java/org/apache/commons/functor/core/composite/BaseBinaryPredicateList.java b/core/src/main/java/org/apache/commons/functor/core/composite/BaseBinaryPredicateList.java
index 7d84d2f..0c042d3 100644
--- a/core/src/main/java/org/apache/commons/functor/core/composite/BaseBinaryPredicateList.java
+++ b/core/src/main/java/org/apache/commons/functor/core/composite/BaseBinaryPredicateList.java
@@ -30,7 +30,7 @@
  */
 abstract class BaseBinaryPredicateList<L, R> implements BinaryPredicate<L, R> {
 
-	// attributes
+    // attributes
     // ------------------------------------------------------------------------
     /**
      * A list to maintain all the adapted predicates.
diff --git a/core/src/main/java/org/apache/commons/functor/core/composite/CompositeBinaryPredicate.java b/core/src/main/java/org/apache/commons/functor/core/composite/CompositeBinaryPredicate.java
index 1700ad5..57eb992 100644
--- a/core/src/main/java/org/apache/commons/functor/core/composite/CompositeBinaryPredicate.java
+++ b/core/src/main/java/org/apache/commons/functor/core/composite/CompositeBinaryPredicate.java
@@ -32,7 +32,7 @@
  */
 public class CompositeBinaryPredicate<L, R> implements BinaryPredicate<L, R> {
 
-	/** Base hash integer used to shift hash. */
+    /** Base hash integer used to shift hash. */
     private static final int HASH_SHIFT = 4;
 
     /**
diff --git a/core/src/main/java/org/apache/commons/functor/core/composite/NullaryNot.java b/core/src/main/java/org/apache/commons/functor/core/composite/NullaryNot.java
index a10ef10..6316eac 100644
--- a/core/src/main/java/org/apache/commons/functor/core/composite/NullaryNot.java
+++ b/core/src/main/java/org/apache/commons/functor/core/composite/NullaryNot.java
@@ -26,7 +26,7 @@
  */
 public final class NullaryNot implements NullaryPredicate {
 
-	// attributes
+    // attributes
     // ------------------------------------------------------------------------
     /**
      * The adapted predicate has to be negated.