Do not ignore the result from calls to write(). This avoids a warning

from newer gcc versions.
Review URL: http://codereview.chromium.org/115698

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2029 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/d8-posix.cc

@@ -280,7 +280,10 @@ static void ExecSubprocess(int* exec_error_fds,
   // Only get here if the exec failed.  Write errno to the parent to tell
   // them it went wrong.  If it went well the pipe is closed.
   int err = errno;
-  write(exec_error_fds[kWriteFD], &err, sizeof(err));
+  int bytes_written;
+  do {
+    bytes_written = write(exec_error_fds[kWriteFD], &err, sizeof(err));
+  } while (bytes_written == -1 && errno == EINTR);
   // Return (and exit child process).
 }