Fix an aout memory leak

	* aoutx.h (aout_bfd_free_cached_info): Free line_buf.

Author: amodra

bfd/aoutx.h

@@ -2909,6 +2909,7 @@ NAME (aout, bfd_free_cached_info) (bfd *abfd)
     return true;
 
 #define BFCI_FREE(x) do { free (x); x = NULL; } while (0)
+  BFCI_FREE (adata (abfd).line_buf);
   BFCI_FREE (obj_aout_symbols (abfd));
 #ifdef USE_MMAP
   obj_aout_external_syms (abfd) = 0;