[gnome-characters] libgc: Suppress compiler warning

[Daiki Ueno <dueno src gnome org>]

commit 6a155c7efe447784c74705708e71d908444ccd1b
Author: Daiki Ueno <dueno src gnome org>
Date:   Mon May 7 07:56:01 2018 +0200

    libgc: Suppress compiler warning

 lib/gc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/lib/gc.c b/lib/gc.c
index bcad500..ce33511 100644
--- a/lib/gc.c
+++ b/lib/gc.c
@@ -541,7 +541,7 @@ gc_character_name (gunichar uc)
         };
 
       for (i = 0; i < G_N_ELEMENTS (cjk_block_starters); i++)
-        cjk_blocks[i] = uc_block (cjk_block_starters[i]);
+        cjk_blocks[i] = (uc_block_t *)uc_block (cjk_block_starters[i]);
       g_once_init_leave (&cjk_blocks_initialized, 1);
     }