[gimp] app: properly initialize more variables Found by Coverity

[Clayton Walker <claytonw src gnome org>]

commit 03f559923ba6ab93f7d220043a50b3e4be8b2be8
Author: Clayton Walker <clayton m walker gmail com>
Date:   Sun Jun 23 13:10:44 2013 +0200

    app: properly initialize more variables
    Found by Coverity

 app/core/gimpdrawable-blend.c  |    4 ++--
 app/vectors/gimpbezierstroke.c |    2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/app/core/gimpdrawable-blend.c b/app/core/gimpdrawable-blend.c
index af2d8f4..1e377e1 100644
--- a/app/core/gimpdrawable-blend.c
+++ b/app/core/gimpdrawable-blend.c
@@ -1007,7 +1007,7 @@ gradient_fill_region (GimpImage           *image,
               for (y = roi->y; y < endy; y++)
                 for (x = roi->x; x < endx; x++)
                   {
-                    GimpRGB  color;
+                    GimpRGB  color = { 0.0, 0.0, 0.0, 1.0 };
                     gint     i = g_rand_int (dither_rand);
 
                     gradient_render_pixel (x, y, &color, &rbd);
@@ -1025,7 +1025,7 @@ gradient_fill_region (GimpImage           *image,
               for (y = roi->y; y < endy; y++)
                 for (x = roi->x; x < endx; x++)
                   {
-                    GimpRGB  color;
+                    GimpRGB  color = { 0.0, 0.0, 0.0, 1.0 };
 
                     gradient_render_pixel (x, y, &color, &rbd);
 
diff --git a/app/vectors/gimpbezierstroke.c b/app/vectors/gimpbezierstroke.c
index 4385d6a..f5caffa 100644
--- a/app/vectors/gimpbezierstroke.c
+++ b/app/vectors/gimpbezierstroke.c
@@ -568,6 +568,8 @@ gimp_bezier_stroke_nearest_point_get (const GimpStroke     *stroke,
 
   count = 0;
   min_dist = -1;
+  pos = 0;
+  point = GIMP_COORDS_DEFAULT_VALUES;
 
   for (anchorlist = stroke->anchors;
        GIMP_ANCHOR (anchorlist->data)->type != GIMP_ANCHOR_ANCHOR;