Fix test nits.

Author: jcranmer-intel

lld/test/COFF/common-dedup.ll

@@ -1,9 +1,10 @@
 ; REQUIRES: x86
+; RUN: rm -rf %t.dir
 ; RUN: split-file %s %t.dir
-; RUN: llc %t.dir/t1.ll -o %t.t1.obj --filetype=obj
-; RUN: llc %t.dir/t2.ll -o %t.t2.obj --filetype=obj
-; RUN: lld-link %t.t1.obj %t.t2.obj  -entry:main -out:%t.exe
-; RUN: llvm-readobj --section-headers %t.exe | FileCheck %s
+; RUN: llc %t.dir/t1.ll -o %t.dir/t1.obj --filetype=obj
+; RUN: llc %t.dir/t2.ll -o %t.dir/t2.obj --filetype=obj
+; RUN: lld-link %t.dir/t1.obj %t.dir/t2.obj -entry:main -out:%t.dir/out.exe
+; RUN: llvm-readobj --section-headers %t.dir/out.exe | FileCheck %s
 
 ; Make sure that the data section contains just one copy of @a, not two.
 ; CHECK: Name: .data