Avoid strerror_r portability issues

runtime/bin/file_macos.cc

Index: runtime/bin/file_macos.cc
diff --git a/runtime/bin/file_macos.cc b/runtime/bin/file_macos.cc
index ddc19cc029794e899f4c336332d2dcb251ebdcdd..6187e946a31e4c9161515f1454c6bf9346286d45 100644
--- a/runtime/bin/file_macos.cc
+++ b/runtime/bin/file_macos.cc
@@ -20,6 +20,7 @@
 #include "bin/log.h"
 
 #include "platform/signal_blocker.h"
+#include "platform/utils.h"
 
 namespace dart {
 namespace bin {
@@ -57,7 +58,7 @@ void File::Close() {
     if (err != 0) {
       const int kBufferSize = 1024;
       char error_message[kBufferSize];
-      strerror_r(errno, error_message, kBufferSize);
+      Utils::StrError(errno, error_message, kBufferSize);
       Log::PrintErr("%s\n", error_message);
     }
   }
@@ -394,7 +395,7 @@ File::StdioHandleType File::GetStdioHandleType(int fd) {
   if (result == -1) {
     const int kBufferSize = 1024;
     char error_message[kBufferSize];
-    strerror_r(errno, error_message, kBufferSize);
+    Utils::StrError(errno, error_message, kBufferSize);
     FATAL2("Failed stat on file descriptor %d: %s", fd, error_message);
   }
   if (S_ISCHR(buf.st_mode)) return kTerminal;