[librsvg] Fix variables that could be accessed uninitialized

[Christian Persch <chpe src gnome org>]

commit 37ca8719be7946052780b14901d8befa56c24074
Author: Felix Riemann <friemann gnome org>
Date:   Fri Mar 23 22:00:04 2012 +0100

    Fix variables that could be accessed uninitialized
    
    Fix warnings when building with -Wuninitialized.
    
    Bug #672725.

 rsvg-base.c   |    3 +++
 rsvg-filter.c |    1 -
 2 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/rsvg-base.c b/rsvg-base.c
index 8d55a27..9cb8f18 100644
--- a/rsvg-base.c
+++ b/rsvg-base.c
@@ -819,6 +819,9 @@ rsvg_entity_decl (void *data, const xmlChar * name, int type,
                                                      NULL,
                                                      &entity_data_len,
                                                      NULL);
+        else
+            entity_data = NULL;
+
         if (entity_data) {
             content = xmlCharStrndup (entity_data, entity_data_len);
             g_free (entity_data);
diff --git a/rsvg-filter.c b/rsvg-filter.c
index 53e0f59..bc54f80 100644
--- a/rsvg-filter.c
+++ b/rsvg-filter.c
@@ -1740,7 +1740,6 @@ rsvg_filter_primitive_merge_render (RsvgFilterPrimitive * self, RsvgFilterContex
 
     output = _rsvg_image_surface_new (ctx->width, ctx->height);
     if (output == NULL) {
-        cairo_surface_destroy (in);
         return;
     }