stack: Fix error message when dwfl_core_file_attach fails.

Reported-by: Mao Han <han_mao@c-sky.com>
Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/src/ChangeLog b/src/ChangeLog
index 2cde63c..c78e6fa 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,7 @@
+2019-06-25  Mark Wielaard  <mark@klomp.org>
+
+	* stack.c (parse_opt): Fix dwfl_core_file_attach error message.
+
 2019-06-18  Mark Wielaard  <mark@klomp.org>
 
 	* strip.c (handle_elf): Use elf_begin ELF_C_WRITE, instead of
diff --git a/src/stack.c b/src/stack.c
index c5f347e..4daabce 100644
--- a/src/stack.c
+++ b/src/stack.c
@@ -608,7 +608,7 @@
       if (core != NULL)
 	{
 	  if (dwfl_core_file_attach (dwfl, core) < 0)
-	    error (EXIT_BAD, 0, "dwfl_core_file_report: %s", dwfl_errmsg (-1));
+	    error (EXIT_BAD, 0, "dwfl_core_file_attach: %s", dwfl_errmsg (-1));
 	}
 
       /* Makes sure we are properly attached.  */