Fix stringshare on 64bits platforms.

sizeof(Eina_Stringshare_Node) is now 24 bytes on 64bits platforms, but
str[] was pointing to before that, to the 20th byte, causing out of
bounds access.

Adding the padding will cause str[] to use the correct position. It
wastes 4 more bytes, like pre-optimizations, but it's just on big
machines.



SVN revision: 37305

legacy/eina/src/lib/eina_stringshare.c

@@ -123,6 +123,11 @@ struct _Eina_Stringshare_Node
 
    unsigned short         length;
    unsigned short         references;
+
+#if __WORDSIZE == 64
+   unsigned int           __padding;
+#endif
+
    char                   str[];
 };