hal: close audio calibration fd

- close audio calibration fd in
  audio_hwdep_send_cal.

Change-Id: Ib08ec8c6aef6d88bf4e4d413fb5d95e4167cce30
diff --git a/hal/msm8916/platform.c b/hal/msm8916/platform.c
index ea58bf0..b7d126c 100644
--- a/hal/msm8916/platform.c
+++ b/hal/msm8916/platform.c
@@ -1468,6 +1468,7 @@
     }
     if (send_codec_cal(acdb_loader_get_calibration, plat_data, fd) < 0)
         ALOGE("%s: Could not send anc cal", __FUNCTION__);
+    close(fd);
 }
 
 const char * get_snd_card_name_for_acdb_loader(const char *snd_card_name) {
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index 8ad9922..f243790 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -1230,6 +1230,7 @@
     }
 
     send_codec_cal(acdb_loader_get_calibration, plat_data, fd);
+    close(fd);
 }
 
 static int platform_acdb_init(void *platform)