[wasm-ld] Fix wasm trace test to use %t for temporary files.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@353272 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/wasm/trace.test b/test/wasm/trace.test
index bf74bd4..023a2cc 100644
--- a/test/wasm/trace.test
+++ b/test/wasm/trace.test
@@ -1,8 +1,8 @@
 RUN: llc -filetype=obj %p/Inputs/start.ll -o %t.foo.o
 
 # Check -t
-RUN: wasm-ld %t.foo.o -o out.wasm -t 2>&1 | FileCheck %s
+RUN: wasm-ld %t.foo.o -o %t.t.out.wasm -t 2>&1 | FileCheck %s
 CHECK: {{.*}}.foo.o
 
 # Check --trace alias
-RUN: wasm-ld %t.foo.o -o out.wasm --trace 2>&1 | FileCheck %s
+RUN: wasm-ld %t.foo.o -o %t.trace.out.wasm --trace 2>&1 | FileCheck %s