Fix filename in wasm build of compiler-rt

[dschuff]

No description provided.

[dschuff]

oops, I didn't realize that auto-merge will not wait for approval before merging. oh well, this is a pretty trivial change.

[sbc100]

Oops, thank you for that. lgtm

I wonder why llvm-project doesn't require a review before auto-submit?

[llvm-ci]

LLVM Buildbot has detected a new failure on builder clang-ppc64le-linux-test-suite running on ppc64le-clang-test-suite while building compiler-rt at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/18582

Here is the relevant piece of the build log for the reference

Step 6 (test-build-unified-tree-check-all) failure: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
...
PASS: LLVM :: tools/llvm-readobj/ELF/file-header-machine-types.test (102280 of 102289)
PASS: ThreadSanitizer-powerpc64le :: deadlock_detector_stress_test.cpp (102281 of 102289)
PASS: lit :: shtest-shell.py (102282 of 102289)
PASS: lit :: shtest-define.py (102283 of 102289)
PASS: ThreadSanitizer-powerpc64le :: restore_stack.cpp (102284 of 102289)
PASS: SanitizerCommon-msan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (102285 of 102289)
PASS: SanitizerCommon-ubsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (102286 of 102289)
PASS: SanitizerCommon-lsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (102287 of 102289)
PASS: SanitizerCommon-tsan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (102288 of 102289)
PASS: SanitizerCommon-asan-powerpc64le-Linux :: Linux/signal_segv_handler.cpp (102289 of 102289)
command timed out: 1200 seconds without output running [b'ninja', b'check-all'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=4315.084015