PR28540, segmentation fault on NULL byte_get

[Alan Modra]

It doesn't make much sense to go looking for separate debug info files
on tekhex files..

	PR 28540
	* objdump.c (dump_bfd): Don't attempt load_separate_debug_files
	when byte_get is NULL.

diff --git a/binutils/objdump.c b/binutils/objdump.c
index 356e3ecd853..1bfb5c71e7a 100644
--- a/binutils/objdump.c
+++ b/binutils/objdump.c
@@ -4862,7 +4862,7 @@ dump_bfd (bfd *abfd, bool is_mainfile)
      
      The test on is_mainfile is there because the chain of separate debug
      info files is a global variable shared by all invocations of dump_bfd.  */
-  if (is_mainfile)
+  if (byte_get != NULL && is_mainfile)
     {
       load_separate_debug_files (abfd, bfd_get_filename (abfd));
 

-- 
Alan Modra
Australia Development Lab, IBM