chore: fix typo

Author: diegomarquezp

gax-java/gax/src/test/java/com/google/api/gax/tracing/TracedServerStreamingCallableTest.java

@@ -80,7 +80,7 @@ void init(boolean useContext) {
       when(tracerFactory.newTracer(any(ApiTracer.class), any(ApiTracerContext.class)))
           .thenReturn(tracer);
       when(tracerContext.fullMethodName()).thenReturn("FakeClient/FakeRpc");
-      t statutracedCallable =
+      tracedCallable =
           new TracedServerStreamingCallable<>(innerCallable, tracerFactory, tracerContext);
     } else {
       when(tracerFactory.newTracer(