Initialize automaticly freed variables where the function could return before the first assignment

GCC 13.1.1 warned on some places like this:

In file included from /usr/include/glib-2.0/glib.h:117,
                 from ../modulemd/modulemd-translation-entry.c:14:
In function ‘g_autoptr_cleanup_generic_gfree’,
    inlined from ‘modulemd_translation_entry_parse_yaml’ at ../modulemd/modulemd-translation-entry.c:39
8:21:
/usr/include/glib-2.0/glib/glib-autocleanups.h:30:3: warning: ‘value’ may be used uninitialized [-Wmaybe-uninitialized]
   30 |   g_free (*pp);
      |   ^~~~~~~~~~~~
../modulemd/modulemd-translation-entry.c: In function ‘modulemd_translation_entry_parse_yaml’:
../modulemd/modulemd-translation-entry.c:398:21: note: ‘value’ was declared here
  398 |   g_autofree gchar *value;
      |                     ^~~~~

Automatic variables with a cleanup attribute are automatically
deinicialized when they go out of scope, but they are not
automatically initialized when defined.

This patch adds the missing initialization.

Author: ppisar

modulemd/modulemd-translation-entry.c

@@ -395,7 +395,7 @@ modulemd_translation_entry_parse_yaml (yaml_parser_t *parser,
   MMD_INIT_YAML_EVENT (event);
   gboolean done = FALSE;
   gboolean in_map = FALSE;
-  g_autofree gchar *value;
+  g_autofree gchar *value = NULL;
   GHashTable *profiles = NULL;
   g_autoptr (ModulemdTranslationEntry) te = NULL;
   g_autoptr (GError) nested_error = NULL;

modulemd/tests/test-modulemd-profile.c

@@ -38,7 +38,7 @@ static void
 profile_test_construct (void)
 {
   g_autoptr (ModulemdProfile) p = NULL;
-  g_auto (GStrv) rpms;
+  g_auto (GStrv) rpms = NULL;
 
   /* Test that the new() function works */
   p = modulemd_profile_new ("testprofile");

modulemd/tests/test-modulemd-translation-entry.c

@@ -38,7 +38,7 @@ static void
 translation_entry_test_construct (void)
 {
   g_autoptr (ModulemdTranslationEntry) te = NULL;
-  g_auto (GStrv) profile_names;
+  g_auto (GStrv) profile_names = NULL;
 
   /* Test that the new() function works */
   te = modulemd_translation_entry_new ("en_US");
@@ -146,7 +146,7 @@ translation_entry_test_copy (void)
 {
   g_autoptr (ModulemdTranslationEntry) te = NULL;
   g_autoptr (ModulemdTranslationEntry) te_copy = NULL;
-  g_auto (GStrv) profile_names;
+  g_auto (GStrv) profile_names = NULL;
 
   /* Test copying an empty translation entry */
   te = modulemd_translation_entry_new ("en_GB");
@@ -426,7 +426,7 @@ static void
 translation_entry_test_profile_descriptions (void)
 {
   g_autoptr (ModulemdTranslationEntry) te = NULL;
-  g_auto (GStrv) profile_names;
+  g_auto (GStrv) profile_names = NULL;
 
   te = modulemd_translation_entry_new ("en_US");
   g_assert_nonnull (te);

modulemd/tests/test-modulemd-translation.c

@@ -43,7 +43,7 @@ static void
 translation_test_construct (void)
 {
   g_autoptr (ModulemdTranslation) t = NULL;
-  g_auto (GStrv) locales;
+  g_auto (GStrv) locales = NULL;
   guint64 translation_version = 1;
   guint64 modified = 3;
 
@@ -137,7 +137,7 @@ translation_test_copy (void)
   g_autoptr (ModulemdTranslation) t = NULL;
   g_autoptr (ModulemdTranslation) t_copy = NULL;
   ModulemdTranslationEntry *te = NULL;
-  g_auto (GStrv) locales;
+  g_auto (GStrv) locales = NULL;
 
   t = modulemd_translation_new (1, "testmod", "teststr", 5);
   g_assert_nonnull (t);