fix typo.

Author: kannanjgithub

xds/src/main/java/io/grpc/xds/ExternalProcessorServerInterceptor.java

@@ -568,7 +568,7 @@ private void sendToExtProc(ProcessingRequest request) {
               .setFlowControlInit(ProcessingRequest.FlowControlInit.newBuilder()
                   .setInitialWindowDownstreamToSidestream(DEFAULT_INITIAL_WINDOW_SIZE)
                   .setInitialWindowSidestreamToUpstream(DEFAULT_INITIAL_WINDOW_SIZE)
-                  .setInitialWindowUpstreamToSidestreama(DEFAULT_INITIAL_WINDOW_SIZE)
+                  .setInitialWindowUpstreamToSidestream(DEFAULT_INITIAL_WINDOW_SIZE)
                   .setInitialWindowSidestreamToDownstream(DEFAULT_INITIAL_WINDOW_SIZE)
                   .build())
               .build();

xds/src/test/java/io/grpc/xds/ExternalProcessorServerInterceptorTest.java

@@ -351,7 +351,7 @@ public void setUp() throws Exception {
 
     serverInfo =
         Bootstrapper.ServerInfo.create(
-            "test_target", Collections.emptyMap(), false, true, false, false, null);
+            "test_target", Collections.emptyMap(), false, true, false, false);
 
     filterContext =
         Filter.FilterConfigParseContext.builder()
@@ -16079,6 +16079,10 @@ public void onClose(Status status, Metadata trailers) {
         .isEqualTo(65536);
     assertThat(firstRequest.getFlowControlInit().getInitialWindowSidestreamToUpstream())
         .isEqualTo(65536);
+    assertThat(firstRequest.getFlowControlInit().getInitialWindowUpstreamToSidestream())
+        .isEqualTo(65536);
+    assertThat(firstRequest.getFlowControlInit().getInitialWindowSidestreamToDownstream())
+        .isEqualTo(65536);
 
     assertThat(secondRequest.hasRequestBody()).isTrue();
     assertThat(secondRequest.hasFlowControlInit()).isFalse();