Clean up formatting.

c++/src/kj/test.c++

@@ -211,10 +211,10 @@ void registerCrashHandler() {
 #endif
 
   stack.ss_size = 65536;
-  stack.ss_sp = reinterpret_cast<char *>(mmap(nullptr, stack.ss_size,
-					      PROT_READ | PROT_WRITE,
-					      MAP_ANONYMOUS | MAP_PRIVATE
-					      | MAP_GROWSDOWN, -1, 0));
+  // Note: ss_sp is char* on FreeBSD, void* on Linux and OSX.
+  stack.ss_sp = reinterpret_cast<char*>(mmap(
+      nullptr, stack.ss_size, PROT_READ | PROT_WRITE,
+      MAP_ANONYMOUS | MAP_PRIVATE | MAP_GROWSDOWN, -1, 0));
   KJ_SYSCALL(sigaltstack(&stack, nullptr));
 
   // Catch all relevant signals.