[test] Fix aarch64-tlsdesc-zrel.s

Author: MaskRay

lld/test/ELF/aarch64-tlsdesc-zrel.s

@@ -29,6 +29,7 @@
 // REL-NEXT:     0x[[#ADDR+16]]  R_AARCH64_TLSDESC -{{$}}
 // REL-NEXT:   }
 // REL-NEXT: ]
+// REL-EMPTY:
 // REL-NEXT: Hex dump of section '.got':
 // REL-NEXT: 0x000[[#ADDR]]    00000000 00000000 00000000 00000000
 // REL-NEXT: 0x000[[#ADDR+16]] 00000000 00000000 04000000 00000000