re PR other/54749 (libbacktrace)

	PR other/54749
	* fileline.c (fileline_initialize): Pass errnum as -1 when
	reporting that we could not read executable information after a
	previous failure.

From-SVN: r191855

libbacktrace/ChangeLog

+2012-09-29  Ian Lance Taylor  <iant@google.com>
+
+	PR other/54749
+	* fileline.c (fileline_initialize): Pass errnum as -1 when
+	reporting that we could not read executable information after a
+	previous failure.
+
 2012-09-27  Ian Lance Taylor  <iant@google.com>
 
 	PR bootstrap/54732

libbacktrace/fileline.c

@@ -63,7 +63,7 @@ fileline_initialize (struct backtrace_state *state,
 
   if (failed)
     {
-      error_callback (data, "failed to read executable information", 0);
+      error_callback (data, "failed to read executable information", -1);
       return 0;
     }