[librsvg] No need to validate UTF-8 in rsvg_extra_handler_characters()

[Federico Mena Quintero <federico src gnome org>]

commit 4bb8914a7e062cad29480c7f2f2b8fa0ed82a1d3
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Feb 19 09:36:49 2018 -0600

    No need to validate UTF-8 in rsvg_extra_handler_characters()
    
    Libxml2 already guarantees valid UTF-8.
    
    With this we drop the glib requirement down to 2.48.0.

 configure.ac | 2 +-
 rsvg-base.c  | 9 +--------
 2 files changed, 2 insertions(+), 9 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 98465b34..ced65ff1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,7 +44,7 @@ dnl This corresponds to Freetype2 2.8
 FREETYPE2_REQUIRED=20.0.14
 GDK_PIXBUF_REQUIRED=2.20
 GIO_REQUIRED=2.24.0
-GLIB_REQUIRED=2.52.0
+GLIB_REQUIRED=2.48.0
 GTK3_REQUIRED=3.10.0
 LIBXML_REQUIRED=2.9.0
 PANGO_REQUIRED=1.38.0
diff --git a/rsvg-base.c b/rsvg-base.c
index a88d83da..c8da9c26 100644
--- a/rsvg-base.c
+++ b/rsvg-base.c
@@ -478,14 +478,7 @@ rsvg_extra_handler_characters (RsvgSaxHandler * self, const char *ch, gssize len
     if (!ch || !len)
         return;
 
-    if (!g_utf8_validate ((char *) ch, len, NULL)) {
-        char *utf8;
-        utf8 = g_utf8_make_valid (ch, len);
-        g_string_append (z->string, utf8);
-        g_free (utf8);
-    } else {
-        g_string_append_len (z->string, (char *) ch, len);
-    }
+    g_string_append_len (z->string, ch, len);
 }
 
 static void