libavfilter/dnn_backend_openvino: Check bbox's height

Check bbox's height with frame's height rather than frame's width.
Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Reviewed-by: Guo Yejun <yejun.guo@intel.com>

libavfilter/dnn/dnn_backend_openvino.c

@@ -1199,7 +1199,7 @@ static int contain_valid_detection_bbox(AVFrame *frame)
         if (bbox->x < 0 || bbox->w < 0 || bbox->x + bbox->w >= frame->width) {
             return 0;
         }
-        if (bbox->y < 0 || bbox->h < 0 || bbox->y + bbox->h >= frame->width) {
+        if (bbox->y < 0 || bbox->h < 0 || bbox->y + bbox->h >= frame->height) {
             return 0;
         }