Fix TODO by removing use of getwd() in nacl-spawn

ports/nacl-spawn/nacl_spawn.cc

Index: ports/nacl-spawn/nacl_spawn.cc
diff --git a/ports/nacl-spawn/nacl_spawn.cc b/ports/nacl-spawn/nacl_spawn.cc
index f86cfb83b32ab135698a184a690316feade13445..8208755ee7e459e63df4812a0c554e69c7fda270 100644
--- a/ports/nacl-spawn/nacl_spawn.cc
+++ b/ports/nacl-spawn/nacl_spawn.cc
@@ -53,15 +53,11 @@ struct NaClSpawnReply {
 };
 
 static std::string GetCwd() {
-  char cwd[PATH_MAX + 1];
-  // TODO(hamaji): Remove this #if and always call getcwd.
-  // https://code.google.com/p/naclports/issues/detail?id=109

[binji, 2014/12/11 23:19:57]

reference this bug?

-#if defined(__GLIBC__)
-  if (!getwd(cwd))
-#else
-  if (!getcwd(cwd, PATH_MAX))
-#endif
+  char cwd[PATH_MAX] = ".";
+  if (!getcwd(cwd, PATH_MAX)) {
+    NACL_LOG("getcwd failed: %s\n", strerror(errno));
     assert(0);
+  }
   return cwd;
 }