Fixed memory overrun in spatial init code

sql/spatial.cc:
  Fixed memory overrun
sql/spatial.h:
  Fixed memory overrun

sql/spatial.cc

@@ -19,7 +19,7 @@
 
 /***************************** Gis_class_info *******************************/
 
-Geometry::Class_info *Geometry::ci_collection[Geometry::wkb_end]=
+Geometry::Class_info *Geometry::ci_collection[Geometry::wkb_end+1]=
 {
   NULL, NULL, NULL, NULL, NULL, NULL, NULL
 };

sql/spatial.h

@@ -251,7 +251,7 @@ public:
   }
 
   bool envelope(String *result) const;
-  static Geometry::Class_info *ci_collection[Geometry::wkb_end];
+  static Geometry::Class_info *ci_collection[Geometry::wkb_end+1];
 
 protected:
   static Class_info *find_class(int type_id)