[freetype2] GSoC-2019-moazin b6403ad: [svg] Don't accept the hooks if value has been passed from an

[Moazin Khatti]

branch: GSoC-2019-moazin
commit b6403ad54eb9749810a239571805f2f350fa235e
Author: Moazin Khatti <address@hidden>
Commit: Moazin Khatti <address@hidden>

    [svg] Don't accept the hooks if value has been passed from an
    env variable.
---
 src/svg/ftsvg.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/svg/ftsvg.c b/src/svg/ftsvg.c
index a438be3..f391200 100644
--- a/src/svg/ftsvg.c
+++ b/src/svg/ftsvg.c
@@ -131,7 +131,13 @@
 
     if ( !ft_strcmp( property_name, "svg_hooks" ) )
     {
-      SVG_RendererHooks*  hooks = (SVG_RendererHooks*)value;
+      SVG_RendererHooks*  hooks;
+
+
+      if ( value_is_string == TRUE )
+        return FT_THROW( Invalid_Argument );
+
+      hooks = (SVG_RendererHooks*)value;
       renderer->hooks     = *hooks;
       renderer->hooks_set = TRUE;
     }