Revert "fixed setting field in jsonInput class"

This reverts commit d428f31.

Author: iampopovich

java/src/org/openqa/selenium/json/JsonInput.java

@@ -39,7 +39,8 @@
 public class JsonInput implements Closeable {
 
   private final Reader source;
-  private boolean readPerformed = false;  // Changed from final
+  // FIXME: This flag is never set
+  private final boolean readPerformed = false;
   private JsonTypeCoercer coercer;
   private PropertySetting setter;
   private final Input input;
@@ -48,7 +49,6 @@ public class JsonInput implements Closeable {
   private final Deque<Container> stack = new ArrayDeque<>();
 
   JsonInput(Reader source, JsonTypeCoercer coercer, PropertySetting setter) {
-
     this.source = Require.nonNull("Source", source);
     this.coercer = Require.nonNull("Coercer", coercer);
     this.input = new Input(source);
@@ -402,10 +402,6 @@ public void skipValue() {
     }
   }
 
-  private void markReadPerformed() {
-    readPerformed = true;
-  }
-
   /**
    * Read the next element from the JSON input stream as the specified type.
    *
@@ -417,16 +413,15 @@ private void markReadPerformed() {
    * @throws UncheckedIOException if an I/O exception is encountered
    */
   public <T> T read(Type type) {
-    markReadPerformed();
     skipWhitespace(input);
 
+    // Guard against reading an empty stream
     if (input.peek() == Input.EOF) {
       return null;
     }
 
     return coercer.coerce(this, type, setter);
   }
-  }
 
   /**
    * Read an array of elements from the JSON input stream with elements as the specified type.