Fix handling of DW_OP_GNU_push_tls_address

In one spot, DW_OP_GNU_push_tls_address is handled differently from
DW_OP_form_tls_address.  However, I think they should always be
treated identically.

Approved-by: Kevin Buettner <kevinb@redhat.com>

gdb/dwarf2/loc.c

diff --git a/gdb/dwarf2/loc.c b/gdb/dwarf2/loc.c
index 8a350b4..1be5246 100644
--- a/gdb/dwarf2/loc.c
+++ b/gdb/dwarf2/loc.c
@@ -1954,12 +1954,12 @@ dwarf2_get_symbol_read_needs (gdb::array_view<const gdb_byte> expr,
 	case DW_OP_lt:
 	case DW_OP_gt:
 	case DW_OP_ne:
-	case DW_OP_GNU_push_tls_address:
 	case DW_OP_nop:
 	case DW_OP_GNU_uninit:
 	case DW_OP_push_object_address:
 	  break;
 
+	case DW_OP_GNU_push_tls_address:
 	case DW_OP_form_tls_address:
 	  if (symbol_needs <= SYMBOL_NEEDS_REGISTERS)
 	    symbol_needs = SYMBOL_NEEDS_REGISTERS;