cpplint issue in vp9_read_bit_buffer resolved

Change-Id: I9dea60e39bc4a51684cfba49c82c3570a2f7b61e

vp9/decoder/vp9_read_bit_buffer.h

diff --git a/vp9/decoder/vp9_read_bit_buffer.h b/vp9/decoder/vp9_read_bit_buffer.h
index c7fa3aa..41a6868 100644
--- a/vp9/decoder/vp9_read_bit_buffer.h
+++ b/vp9/decoder/vp9_read_bit_buffer.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef VP9_READ_BIT_BUFFER_
-#define VP9_READ_BIT_BUFFER_
+#ifndef VP9_DECODER_VP9_READ_BIT_BUFFER_H_
+#define VP9_DECODER_VP9_READ_BIT_BUFFER_H_
 
 #include <limits.h>
 
@@ -57,4 +57,4 @@
   return vp9_rb_read_bit(rb) ? -value : value;
 }
 
-#endif  // VP9_READ_BIT_BUFFER_
+#endif  // VP9_DECODER_VP9_READ_BIT_BUFFER_H_