[glib] gthread: Fix use of a local variable after it went out of scope

[Philip Withnall <pwithnall src gnome org>]

commit 03a82ce898ea435efd73a250d989f8dc6249aaf8
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Fri May 16 21:47:24 2014 +0100

    gthread: Fix use of a local variable after it went out of scope
    
    This could theoretically cause problems, although in practice we would
    have seen them by now (the bug was introduced in 2012).
    
    Coverity issue: #1159486
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730277

 glib/gthread-posix.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/glib/gthread-posix.c b/glib/gthread-posix.c
index c98c2d8..2f54070 100644
--- a/glib/gthread-posix.c
+++ b/glib/gthread-posix.c
@@ -83,18 +83,18 @@ g_mutex_impl_new (void)
   pthread_mutexattr_t *pattr = NULL;
   pthread_mutex_t *mutex;
   gint status;
+#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
+  pthread_mutexattr_t attr;
+#endif
 
   mutex = malloc (sizeof (pthread_mutex_t));
   if G_UNLIKELY (mutex == NULL)
     g_thread_abort (errno, "malloc");
 
 #ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
-  {
-    pthread_mutexattr_t attr;
-    pthread_mutexattr_init (&attr);
-    pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
-    pattr = &attr;
-  }
+  pthread_mutexattr_init (&attr);
+  pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
+  pattr = &attr;
 #endif
 
   if G_UNLIKELY ((status = pthread_mutex_init (mutex, pattr)) != 0)