Another Darwin build fix

[Josh Matthews]

The system default gcc on 10.6.8 hits an uninitialized value warning
which causes the build to fail.

Cheers,
Josh

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f85f139..73803fd 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-07  Josh Matthews  <josh@joshmatthews.net>  (tiny change)
+
+       Fix build error in Darwin port.
+       * machoread.c: Initialize nbr_syms to avoid warnings-as-errors failure.
+
 2012-02-07  Tom Tromey  <tromey@redhat.com>

        * charset.c (find_charset_names): Check 'in' against NULL.
diff --git a/gdb/machoread.c b/gdb/machoread.c
index 9fa97e1..88ce612 100644
--- a/gdb/machoread.c
+++ b/gdb/machoread.c
@@ -180,7 +180,7 @@ macho_symtab_read (struct objfile *objfile,
   const asymbol *dir_so = NULL;
   const asymbol *file_so = NULL;
   asymbol **oso_file = NULL;
-  unsigned int nbr_syms;
+  unsigned int nbr_syms = 0;

   /* Current state while reading stabs.  */
   enum