fix for using an un-initialized pointer & quiet compiler wanring on raytrace test.

source/blender/render/intern/raytrace/rayobject.cpp

@@ -450,6 +450,7 @@ int RE_rayobject_intersect(RayObject *r, Isect *i)
 		return r->api->raycast( r, i );
 	}
 	else assert(0);
+    return 0; /* wont reach this, quiet compilers */
 }
 
 void RE_rayobject_add(RayObject *r, RayObject *o)

source/blender/render/intern/source/convertblender.c

@@ -2627,7 +2627,7 @@ static void init_render_dm(DerivedMesh *dm, Render *re, ObjectRen *obr,
 	int a, a1, end, totvert, vertofs;
 	VertRen *ver;
 	VlakRen *vlr;
-	Curve *cu;
+	Curve *cu= NULL;
 	MVert *mvert = NULL;
 	MFace *mface;
 	Material *ma;