mm-video: vdec: reset display aspect ratio params

For specific streams which do not have display aspect ratio
information, component sends uninitialized garbage values
to the client. Reset these values to zero in such case to
avoid garbage.

CRs-Fixed: 543695
Change-Id: I5c774417d56d0eed362bf6ddb703534a97331a50
diff --git a/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp b/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp
index 39e952c..2d225d2 100644
--- a/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp
+++ b/mm-video-v4l2/vidc/vdec/src/omx_vdec_msm8974.cpp
@@ -8806,6 +8806,9 @@
         if (m_disp_hor_size && m_disp_vert_size) {
             frame_info->displayAspectRatio.displayHorizontalSize = m_disp_hor_size;
             frame_info->displayAspectRatio.displayVerticalSize = m_disp_vert_size;
+        } else {
+            frame_info->displayAspectRatio.displayHorizontalSize = 0;
+            frame_info->displayAspectRatio.displayVerticalSize = 0;
         }
     }