[glib] tests: Fix some leaks and double-frees in the GSubprocess tests

[Philip Withnall <pwithnall src gnome org>]

commit 73eee8d64ed4a074bb17d26a6e387a4c272f94f6
Author: Philip Withnall <withnall endlessm com>
Date:   Wed Aug 23 11:24:32 2017 +0100

    tests: Fix some leaks and double-frees in the GSubprocess tests
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786456

 gio/tests/gsubprocess.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gio/tests/gsubprocess.c b/gio/tests/gsubprocess.c
index d5fffcc..39f748b 100644
--- a/gio/tests/gsubprocess.c
+++ b/gio/tests/gsubprocess.c
@@ -805,8 +805,7 @@ test_communicate (void)
   stdout_data = g_bytes_get_data (stdout, &stdout_len);
 
   g_assert_cmpmem (stdout_data, stdout_len, "hello world", 11);
-  g_bytes_unref (stdout);
-  
+
   g_bytes_unref (input);
   g_bytes_unref (stdout);
   g_object_unref (proc);
@@ -1067,6 +1066,7 @@ test_env (void)
   g_strfreev (split);
   g_free (result);
   g_object_unref (proc);
+  g_object_unref (launcher);
 }
 
 /* Test that explicitly inheriting and modifying the parent process’
@@ -1112,6 +1112,7 @@ test_env_inherit (void)
   g_strfreev (split);
   g_free (result);
   g_object_unref (proc);
+  g_object_unref (launcher);
 }
 
 static void
@@ -1145,6 +1146,7 @@ test_cwd (void)
 
   g_free (result);
   g_object_unref (proc);
+  g_object_unref (launcher);
 }
 #ifdef G_OS_UNIX
 static void
@@ -1400,6 +1402,8 @@ test_launcher_environment (void)
   g_free (out);
 
   g_object_unref (proc);
+  g_object_unref (launcher);
+  g_ptr_array_unref (args);
 }
 
 int