Bug 1664535 - Temporary suppression for GC race. r=jonco

Differential Revision: https://phabricator.services.mozilla.com/D93507

mozglue/build/TsanOptions.cpp

@@ -212,6 +212,10 @@ extern "C" const char* __tsan_default_suppressions() {
          // Bug 1615569
          "race:mp_exptmod.max_window_bits\n"
 
+         // Bug 1664535
+         "race:setNeedsIncrementalBarrier\n"
+         "race:needsIncrementalBarrier\n"
+
          // ~GLContextGLX unlocks a libGL mutex that cannot be seen
          // by TSan because libGL is not instrumented.
          "mutex:GLContextGLX::~GLContextGLX\n"