Crashpad: ALLOW_UNUSED_LOCAL things that are only used in DPLOG_IF.

third_party/crashpad/crashpad/handler/handler_main.cc

Index: third_party/crashpad/crashpad/handler/handler_main.cc
diff --git a/third_party/crashpad/crashpad/handler/handler_main.cc b/third_party/crashpad/crashpad/handler/handler_main.cc
index c7c2b29738bde496f39cd31c8594fc8946ff5456..153607be078ce0433bd68472769462fdae98dd8c 100644
--- a/third_party/crashpad/crashpad/handler/handler_main.cc
+++ b/third_party/crashpad/crashpad/handler/handler_main.cc
@@ -165,6 +165,7 @@ void RestoreDefaultSignalHandler(int sig) {
   sa.sa_handler = SIG_DFL;
   int rv = sigaction(sig, &sa, nullptr);
   DPLOG_IF(ERROR, rv != 0) << "sigaction " << sig;
+  ALLOW_UNUSED_LOCAL(rv);  // https://crbug.com/695314
 }
 
 void HandleCrashSignal(int sig, siginfo_t* siginfo, void* context) {
@@ -240,6 +241,7 @@ void HandleCrashSignal(int sig, siginfo_t* siginfo, void* context) {
     // initially triggered.
     int rv = raise(sig);
     DPLOG_IF(ERROR, rv != 0) << "raise";
+    ALLOW_UNUSED_LOCAL(rv);  // https://crbug.com/695314
   }
 }
 
@@ -253,6 +255,7 @@ void HandleTerminateSignal(int sig, siginfo_t* siginfo, void* context) {
   // because termination signals never originate in that way.
   int rv = raise(sig);
   DPLOG_IF(ERROR, rv != 0) << "raise";
+  ALLOW_UNUSED_LOCAL(rv);  // https://crbug.com/695314
 }
 
 void InstallCrashHandler() {