[gjs] maint: Fix memory leaks

[Philip Chimento <pchimento src gnome org>]

commit 165b5b94740222adc862f16b2d23f9e83f06b8b4
Author: Philip Chimento <philip chimento gmail com>
Date:   Sun Feb 26 16:54:21 2017 -0800

    maint: Fix memory leaks
    
    Some memory leaks uncovered by Valgrind.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=779293

 gjs/context.cpp             |    2 ++
 gjs/coverage.cpp            |    7 +++----
 test/gjs-test-call-args.cpp |    2 ++
 3 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/gjs/context.cpp b/gjs/context.cpp
index dc1ba70..08292fb 100644
--- a/gjs/context.cpp
+++ b/gjs/context.cpp
@@ -345,6 +345,7 @@ gjs_context_class_init(GjsContextClass *klass)
     g_object_class_install_property(object_class,
                                     PROP_SEARCH_PATH,
                                     pspec);
+    g_param_spec_unref(pspec);
 
     pspec = g_param_spec_string("program-name",
                                 "Program Name",
@@ -355,6 +356,7 @@ gjs_context_class_init(GjsContextClass *klass)
     g_object_class_install_property(object_class,
                                     PROP_PROGRAM_NAME,
                                     pspec);
+    g_param_spec_unref(pspec);
 
     /* For GjsPrivate */
     {
diff --git a/gjs/coverage.cpp b/gjs/coverage.cpp
index d8a6ae7..09a6fc3 100644
--- a/gjs/coverage.cpp
+++ b/gjs/coverage.cpp
@@ -292,7 +292,7 @@ copy_source_file_to_coverage_output(GFile *source_file,
 
     /* We need to recursively make the directory we
      * want to copy to, as g_file_copy doesn't do that */
-    GFile *destination_dir = g_file_get_parent(destination_file);
+    GjsAutoUnref<GFile> destination_dir = g_file_get_parent(destination_file);
     if (!g_file_make_directory_with_parents(destination_dir, NULL, &error)) {
         if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_EXISTS))
             goto fail;
@@ -1037,10 +1037,9 @@ gjs_deserialize_cache_to_object_for_compartment(JSContext        *context,
                                                global_object));
 
     gsize len = 0;
-    gpointer string = g_bytes_unref_to_data(g_bytes_ref(cache_data),
-                                            &len);
+    auto string = static_cast<const char *>(g_bytes_get_data(cache_data, &len));
 
-    return JS_NewStringCopyN(context, (const char *) string, len);
+    return JS_NewStringCopyN(context, string, len);
 }
 
 JSString *
diff --git a/test/gjs-test-call-args.cpp b/test/gjs-test-call-args.cpp
index 90414a3..9eea273 100644
--- a/test/gjs-test-call-args.cpp
+++ b/test/gjs-test-call-args.cpp
@@ -108,6 +108,8 @@ JSNATIVE_TEST_FUNC_BEGIN(one_of_each_type)
     g_assert_cmpint(int64val, ==, 1);
     g_assert_cmpfloat(dblval, ==, 1.0);
     g_assert_nonnull(objval);
+    g_free(strval);
+    g_free(fileval);
 JSNATIVE_TEST_FUNC_END
 
 JSNATIVE_TEST_FUNC_BEGIN(optional_args_all)