[gtksourceview/wip/fix-warnings] ContextEngine: fix compilation warnings

[SĂŠbastien Wilmet <swilmet src gnome org>]

commit 17663047e7a16a4a3f94e7a358128347875a216d
Author: SĂŠbastien Wilmet <swilmet gnome org>
Date:   Sun Aug 9 16:45:29 2015 +0200

    ContextEngine: fix compilation warnings

 gtksourceview/gtksourcecontextengine.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcecontextengine.c b/gtksourceview/gtksourcecontextengine.c
index 0e73e66..6c72c78 100644
--- a/gtksourceview/gtksourcecontextengine.c
+++ b/gtksourceview/gtksourcecontextengine.c
@@ -3303,7 +3303,7 @@ static void
 context_unref (Context *context)
 {
        ContextPtr *children;
-       gint i;
+       guint i;
 
        if (context == NULL || --context->ref_count != 0)
                return;
@@ -5372,11 +5372,13 @@ update_syntax (GtkSourceContextEngine *ce,
 
        if (0 == start_offset)
        {
+               gunichar c;
+
                first_line = TRUE;
 
                /* If it is the first line and it starts with BOM, skip it
                 * since regexes in lang files do not take it into account */
-               gunichar c = gtk_text_iter_get_char (&start_iter);
+               c = gtk_text_iter_get_char (&start_iter);
                if (IS_BOM (c))
                {
                        gtk_text_iter_forward_char (&start_iter);
@@ -5656,6 +5658,8 @@ context_definition_new (const gchar            *id,
                        g_return_val_if_fail (!match, NULL);
                        g_return_val_if_fail (!end || start, NULL);
                        break;
+               default:
+                       g_assert_not_reached ();
        }
 
        definition = g_slice_new0 (ContextDefinition);
@@ -5757,6 +5761,8 @@ context_definition_unref (ContextDefinition *definition)
                        _gtk_source_regex_unref (definition->u.start_end.start);
                        _gtk_source_regex_unref (definition->u.start_end.end);
                        break;
+               default:
+                       g_assert_not_reached ();
        }
 
        sub_pattern_list = definition->sub_patterns;
@@ -5888,6 +5894,8 @@ _gtk_source_context_data_define_context (GtkSourceContextData   *ctx_data,
                        if (match_regex != NULL)
                                wrong_args = TRUE;
                        break;
+               default:
+                       g_assert_not_reached ();
        }
 
        if (wrong_args)