loongarch: 'index' shadows global

[Alan Modra]

Avoid an error when compiling with older versions of gcc.

	* elfnn-loongarch.c (loongarch_relax_align): Rename "index" to
	"sym_index".

diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c
index 2f1c78ab4f8..0987628098e 100644
--- a/bfd/elfnn-loongarch.c
+++ b/bfd/elfnn-loongarch.c
@@ -4309,8 +4309,8 @@ loongarch_relax_align (bfd *abfd, asection *sec,
 {
   bfd_vma  addend, max = 0, alignment = 1;
 
-  int index = ELFNN_R_SYM (rel->r_info);
-  if (index > 0)
+  int sym_index = ELFNN_R_SYM (rel->r_info);
+  if (sym_index > 0)
     {
       alignment = 1 << (rel->r_addend & 0xff);
       max = rel->r_addend >> 8;

-- 
Alan Modra
Australia Development Lab, IBM