Merge "Fix ScopedSignalHandler"
am: 7dbf1a187e

Change-Id: Ic85a20682ecaa109d03827a694efd751e0fb9418
diff --git a/libmemunreachable/ScopedSignalHandler.h b/libmemunreachable/ScopedSignalHandler.h
index f62f368..ff53fad 100644
--- a/libmemunreachable/ScopedSignalHandler.h
+++ b/libmemunreachable/ScopedSignalHandler.h
@@ -37,7 +37,7 @@
 
   template <class F>
   void install(int signal, F&& f) {
-    if (signal != -1) MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed");
+    if (signal_ != -1) MEM_LOG_ALWAYS_FATAL("ScopedSignalHandler already installed");
 
     handler_ = SignalFn(std::allocator_arg, allocator_,
                         [=](int signal, siginfo_t* si, void* uctx) { f(*this, signal, si, uctx); });