[gnome-font-viewer] Use g_auto(GStrv) to free string arrays

[Cosimo Cecchi <cosimoc src gnome org>]

commit f08938213273283b02477299868c42711681c495
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sat Jul 6 08:54:50 2019 -0700

    Use g_auto(GStrv) to free string arrays
    
    If we mark them with g_autofree only the container will be released.

 src/font-thumbnailer.c | 2 +-
 src/font-view.c        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/font-thumbnailer.c b/src/font-thumbnailer.c
index 5b80583..0235e24 100644
--- a/src/font-thumbnailer.c
+++ b/src/font-thumbnailer.c
@@ -160,7 +160,7 @@ main (int argc,
     g_autoptr(GFile) file = NULL;
     g_autoptr(GOptionContext) context = NULL;
     g_autofree gchar *contents = NULL, *help = NULL, *str = NULL, *uri = NULL;
-    g_autofree gchar **arguments = NULL;
+    g_auto(GStrv) arguments = NULL;
     FT_Error error;
     FT_Library library;
     FT_Face face;
diff --git a/src/font-view.c b/src/font-view.c
index 23ac16c..cf218c4 100644
--- a/src/font-view.c
+++ b/src/font-view.c
@@ -116,7 +116,7 @@ static void ensure_window (FontViewApplication *self);
 static void
 strip_whitespace (gchar **original)
 {
-    g_autofree gchar **split = NULL;
+    g_auto(GStrv) split = NULL;
     g_autoptr(GString) reassembled = NULL;
     const gchar *str;
     gint idx, n_stripped;