libdvr: when adjust the size more than 1 time PVR can't playing [1/1]

PD#OTT-39917
PD#SWPL-119694

Problem:
Cannot repeatedly playback a recording. Dtvkitserver crashes always.

Solution:
Fix a libdvr defect. With the fix, libdvr can recognize an error condition
earlier and handle it properly without propagating it to subsequent process.

Verify:
Tested pass on S805C3 Zapper+.

Signed-off-by: Wentao.MA <wentao.ma@amlogic.com>
Change-Id: Ie418f505b84069c16f51bc9998e9356b703946c7
diff --git a/include/dvr_playback.h b/include/dvr_playback.h
index 276e0a6..a811c0d 100644
--- a/include/dvr_playback.h
+++ b/include/dvr_playback.h
@@ -310,7 +310,7 @@
   DVR_PlaybackCmdInfo_t      cmd;           /**< playback cmd*/
   int                        offset;         /**< segment read offset*/
   uint32_t                   dur;         /**< segment dur*/
-  Segment_Handle_t           r_handle;           /**< playback current segment handle*/
+  Segment_Handle_t           segment_handle;           /**< playback current segment handle*/
   DVR_PlaybackOpenParams_t   openParams;           /**< playback openParams*/
   DVR_Bool_t                 has_video;    /**< has video playing*/
   DVR_Bool_t                 has_audio;    /**< has audio playing*/