gatekeeperd_service_fuzzer: Add signal() to handle SIGPIPE

Adding signal handler to avoid abort() due to
broken pipe.

Test: ./gatekeeperd_service_fuzzer
Bug: 376201407
Change-Id: Ifca08860d11f56eb8e0d490c6b6956f8774cfa70
diff --git a/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp b/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
index bc0d5fe..a3cc3f3 100644
--- a/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
+++ b/gatekeeperd/fuzzer/GateKeeperServiceFuzzer.cpp
@@ -22,6 +22,8 @@
 using android::GateKeeperProxy;
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    // TODO(b/183141167): need to rewrite 'dump' to avoid SIGPIPE.
+    signal(SIGPIPE, SIG_IGN);
     auto gatekeeperService = new GateKeeperProxy();
     fuzzService(gatekeeperService, FuzzedDataProvider(data, size));
     return 0;