remove spurious default field values

src/main/org/apache/tools/ant/taskdefs/PathConvert.java

@@ -37,6 +37,7 @@ import org.apache.tools.ant.types.EnumeratedAttribute;
 import org.apache.tools.ant.types.Mapper;
 import org.apache.tools.ant.types.Path;
 import org.apache.tools.ant.types.Reference;
+import org.apache.tools.ant.types.Resource;
 import org.apache.tools.ant.types.ResourceCollection;
 import org.apache.tools.ant.types.resources.Resources;
 import org.apache.tools.ant.types.resources.Union;
@@ -62,19 +63,19 @@ public class PathConvert extends Task {
     /**
      * Path to be converted
      */
-    private Resources path = null;
+    private Resources path;
     /**
      * Reference to path/fileset to convert
      */
-    private Reference refid = null;
+    private Reference refid;
     /**
      * The target OS type
      */
-    private String targetOS = null;
+    private String targetOS;
     /**
      * Set when targetOS is set to windows
      */
-    private boolean targetWindows = false;
+    private boolean targetWindows;
     /**
      * Set if we should create a new property even if the result is empty
      */
@@ -82,7 +83,7 @@ public class PathConvert extends Task {
     /**
      * The property to receive the conversion
      */
-    private String property = null;
+    private String property;
     /**
      * Path prefix map
      */
@@ -90,14 +91,14 @@ public class PathConvert extends Task {
     /**
      * User override on path sep char
      */
-    private String pathSep = null;
+    private String pathSep;
     /**
      * User override on directory sep char
      */
-    private String dirSep = null;
+    private String dirSep;
 
     /** Filename mapper */
-    private Mapper mapper = null;
+    private Mapper mapper;
 
     private boolean preserveDuplicates;