[hitori] build: Fix -Werror build for clang

[Ting-Wei Lan <lantw src gnome org>]

commit 263efcc10124ac45d70d88cfc66e1b97c11e5c60
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sat Jun 6 09:20:02 2015 +0800

    build: Fix -Werror build for clang
    
    This prevents 'void function should not return void expression' warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=750482

 src/generator.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/generator.c b/src/generator.c
index 066a0e6..4978985 100644
--- a/src/generator.c
+++ b/src/generator.c
@@ -92,7 +92,8 @@ hitori_generate_board (Hitori *hitori, guint new_board_size, gint seed)
                        g_slice_free1 (sizeof (gboolean) * (hitori->board_size + 2), horiz_accum[iter.x]);
                g_free (horiz_accum);
 
-               return hitori_generate_board (hitori, hitori->board_size, seed + 1);
+               hitori_generate_board (hitori, hitori->board_size, seed + 1);
+               return;
        }
 
        /* Fill in the squares, leaving the painted ones blank,
@@ -119,7 +120,8 @@ hitori_generate_board (Hitori *hitori, guint new_board_size, gint seed)
                                                        g_slice_free1 (sizeof (gboolean) * 
(hitori->board_size + 2), horiz_accum[iter.x]);
                                                g_free (horiz_accum);
 
-                                               return hitori_generate_board (hitori, hitori->board_size, 
seed + 1); /* We're buggered */
+                                               hitori_generate_board (hitori, hitori->board_size, seed + 1); 
/* We're buggered */
+                                               return;
                                        }
 
                                        i = rand () % (hitori->board_size + 1) + 1;