[PATCH] Fix -Wformat-extra-args warning.

[Yao Qi]

Hi,
When compile gdb with clang, the following warning is reported,

  git/gdb/symtab.c:3784:24: error: data argument not used by format string [-Werror,-Wformat-extra-args]

It is obvious to me, but review is still welcome.

gdb:

2012-11-26  Yao Qi  <yao@codesourcery.com>

	* symtab.c (symtab_symbol_info): Fix a -Wformat-extra-args
	warning.
---
 gdb/symtab.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/gdb/symtab.c b/gdb/symtab.c
index 05943cf..e8cd861 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -3778,10 +3778,11 @@ symtab_symbol_info (char *regexp, enum search_domain kind, int from_tty)
   search_symbols (regexp, kind, 0, (char **) NULL, &symbols);
   old_chain = make_cleanup_free_search_symbols (symbols);
 
-  printf_filtered (regexp
-		   ? "All %ss matching regular expression \"%s\":\n"
-		   : "All defined %ss:\n",
-		   classnames[kind], regexp);
+  if (regexp != NULL)
+    printf_filtered ("All %ss matching regular expression \"%s\":\n",
+		     classnames[kind], regexp);
+  else
+    printf_filtered ("All defined %ss:\n", classnames[kind]);
 
   for (p = symbols; p != NULL; p = p->next)
     {
-- 
1.7.7.6