Free gas/dwarf2dbg.c dirs

[Alan Modra]

Entries are allocated with xmemdup0.

	* dwarf2dbg.c (dwarf2_cleanup): Free dirs entries.

diff --git a/gas/dwarf2dbg.c b/gas/dwarf2dbg.c
index 5f2f58ff7b0..c7d9e8ef72f 100644
--- a/gas/dwarf2dbg.c
+++ b/gas/dwarf2dbg.c
@@ -3096,6 +3096,8 @@ dwarf2_cleanup (void)
 {
   purge_generated_debug (true);
   free (files);
+  for (unsigned int i = 0; i < dirs_in_use; i++)
+    free (dirs[i]);
   free (dirs);
 }
 

-- 
Alan Modra
Australia Development Lab, IBM