[sysprof] libsysprof-capture: reset reader before catting into dest

[Christian Hergert <chergert src gnome org>]

commit fc013fe99f379af69f73217dfb400ff32c6d3842
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jul 31 13:07:41 2019 -0700

    libsysprof-capture: reset reader before catting into dest

 src/libsysprof-capture/sysprof-capture-writer-cat.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/libsysprof-capture/sysprof-capture-writer-cat.c 
b/src/libsysprof-capture/sysprof-capture-writer-cat.c
index 2b2694a..6dc2fce 100644
--- a/src/libsysprof-capture/sysprof-capture-writer-cat.c
+++ b/src/libsysprof-capture/sysprof-capture-writer-cat.c
@@ -159,6 +159,8 @@ sysprof_capture_writer_cat (SysprofCaptureWriter  *self,
   g_return_val_if_fail (self != NULL, FALSE);
   g_return_val_if_fail (reader != NULL, FALSE);
 
+  sysprof_capture_reader_reset (reader);
+
   translate_table_clear (tables, TRANSLATE_CTR);
   translate_table_clear (tables, TRANSLATE_ADDR);