Silence -Wunused-but-set-variable in new code.

Bug: chromium:1203071
Change-Id: Id94bf93784f939c212c8da2be4755160cfb9f8e0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/67081
Auto-Submit: Peter Kasting <pkasting@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
diff --git a/fuzzers/tint_common_fuzzer.cc b/fuzzers/tint_common_fuzzer.cc
index d2100db..27c49e1 100644
--- a/fuzzers/tint_common_fuzzer.cc
+++ b/fuzzers/tint_common_fuzzer.cc
@@ -274,7 +274,7 @@
     CHECK_INSPECTOR(inspector);
 
     auto storage_size = inspector.GetStorageSize(ep.name);
-    storage_size = 0;  // Silencing unused variable warning
+    (void)storage_size;  // Silencing unused variable warning
     CHECK_INSPECTOR(inspector);
 
     auto resource_bindings = inspector.GetResourceBindings(ep.name);
@@ -324,7 +324,7 @@
     CHECK_INSPECTOR(inspector);
 
     auto workgroup_storage = inspector.GetWorkgroupStorageSize(ep.name);
-    workgroup_storage = 0;  // Silencing unused variable warning
+    (void)workgroup_storage;  // Silencing unused variable warning
     CHECK_INSPECTOR(inspector);
   }
 }