Make lto-streamer.h consistent wrt. symtab_node

[Gerald Pfeifer]

Looking for something else, I noticed that the majority of references
in lto-streamer.h were to symtab_node, whereas there were two left to
symtab_node.  

This patch, tested for weeks on i386-unknown-freebsd10.0, makes things
consistent.  Applied as obvious.

Gerald

2014-08-10  Gerald Pfeifer  <gerald@pfeifer.com>

	* lto-streamer.h (struct output_block::symbol): Change from
	struct symtab_node to plain symtab_node.
	(referenced_from_this_partition_p): Change first parameter
	from struct symtab_node to plain symtab_node.

Index: lto-streamer.h
===================================================================
--- lto-streamer.h	(revision 213804)
+++ lto-streamer.h	(working copy)
@@ -636,7 +636,7 @@
 
   /* The current symbol that we are currently serializing.  Null
      if we are serializing something else.  */
-  struct symtab_node *symbol;
+  symtab_node *symbol;
 
   /* These are the last file and line that were seen in the stream.
      If the current node differs from these, it needs to insert
@@ -826,7 +826,7 @@
 				        lto_symtab_encoder_t);
 bool reachable_from_other_partition_p (struct cgraph_node *,
 				       lto_symtab_encoder_t);
-bool referenced_from_this_partition_p (struct symtab_node *,
+bool referenced_from_this_partition_p (symtab_node *,
 					lto_symtab_encoder_t);
 bool reachable_from_this_partition_p (struct cgraph_node *,
 				      lto_symtab_encoder_t);