[seed] Bug #778176 - Fix System.programInvocationName

[Alan Knowles <alank src gnome org>]

commit d890fcdeb5fafcb76beabb2aa315def187345c4a
Author: Emanuele Aina <emanuele aina collabora com>
Date:   Tue Feb 7 13:59:19 2017 +0800

    Bug #778176 -  Fix System.programInvocationName

 libseed/seed-engine.c |   24 +++++++++++++-----------
 1 files changed, 13 insertions(+), 11 deletions(-)
---
diff --git a/libseed/seed-engine.c b/libseed/seed-engine.c
index 5aa250d..5a8df7d 100644
--- a/libseed/seed-engine.c
+++ b/libseed/seed-engine.c
@@ -1754,8 +1754,10 @@ seed_parse_args(SeedEngine* eng, int* argc, char*** argv)
         ret = FALSE;
     }
 
-    if (!eng->program_name)
-        eng->program_name = g_strdup(*argv[0]);
+    if (!eng->program_name) {
+        int program_name_idx = *argc > 1 ? 1 : 0;
+        eng->program_name = g_strdup((*argv)[program_name_idx]);
+    }
 
     g_option_context_free(option_context);
 
@@ -1811,6 +1813,15 @@ seed_init_constrained_with_context_and_group(gint* argc,
 
     eng = (SeedEngine*) g_malloc(sizeof(SeedEngine));
 
+    context_group = group;
+
+    eng->context = context;
+    eng->global = JSContextGetGlobalObject(eng->context);
+    eng->group = context_group;
+    eng->search_path = NULL;
+    eng->program_name = NULL;
+    eng->importer_initialized = FALSE;
+
     if ((argc != 0) && seed_parse_args(eng, argc, argv) == FALSE) {
         SEED_NOTE(MISC, "failed to parse arguments.");
         return FALSE;
@@ -1827,15 +1838,6 @@ seed_init_constrained_with_context_and_group(gint* argc,
 
     pthread_key_create(&seed_next_gobject_wrapper_key, NULL);
 
-    context_group = group;
-
-    eng->context = context;
-    eng->global = JSContextGetGlobalObject(eng->context);
-    eng->group = context_group;
-    eng->search_path = NULL;
-    eng->program_name = NULL;
-    eng->importer_initialized = FALSE;
-
     function_proto
       = (JSObjectRef) seed_simple_evaluate(eng->context, "Function.prototype",
                                            NULL);