[libgxps/wip/nacho/visibility: 1/7] Fix useless warnings

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 40c107af66f51b1c05229513ec1f1c04268c3dd9
Author: Ignacio Casal Quinteiro <ignacio casal nice-software com>
Date:   Fri Sep 9 15:48:42 2016 +0200

    Fix useless warnings
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771057

 libgxps/gxps-glyphs.c |    2 ++
 libgxps/gxps-path.c   |    4 ++++
 2 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/libgxps/gxps-glyphs.c b/libgxps/gxps-glyphs.c
index 26bce59..0618720 100644
--- a/libgxps/gxps-glyphs.c
+++ b/libgxps/gxps-glyphs.c
@@ -108,6 +108,8 @@ glyphs_indices_token_type_to_string (GlyphsIndicesTokenType type)
         default:
                 g_assert_not_reached ();
         }
+
+        return NULL;
 }
 
 static gboolean
diff --git a/libgxps/gxps-path.c b/libgxps/gxps-path.c
index 1ff091d..c9560d8 100644
--- a/libgxps/gxps-path.c
+++ b/libgxps/gxps-path.c
@@ -99,6 +99,8 @@ path_data_token_type_to_string (PathDataTokenType type)
         default:
                 g_assert_not_reached ();
         }
+
+        return NULL;
 }
 
 #ifdef GXPS_ENABLE_DEBUG
@@ -124,6 +126,8 @@ print_token (PathDataToken *token)
         default:
                 g_assert_not_reached ();
         }
+
+        return NULL;
 }
 #endif /* GXPS_ENABLE_DEBUG */