PR 33697, fuzzer segfault

	PR 33697
	* readelf.c (process_relocs): Don't segfault on no sections.

binutils/readelf.c

diff --git a/binutils/readelf.c b/binutils/readelf.c
index 1bd9afa..b3f59aa 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -10048,13 +10048,11 @@
       size_t i;
       bool found = false;
 
-      for (i = 0, section = filedata->section_headers;
-	   i < filedata->file_header.e_shnum;
-	   i++, section++)
-	{
+      section = filedata->section_headers;
+      if (section != NULL)
+	for (i = 0; i < filedata->file_header.e_shnum; i++, section++)
 	  if (display_relocations (section, filedata, do_reloc))
 	    found = true;
-	}
 
       if (do_reloc && ! found)
 	{