Fix for bug #3359. Bad named pipe name.

sql/mysqld.cc:
  Fix for bug #3359. Bad named pipe name

sql/mysqld.cc

@@ -1197,7 +1197,7 @@ static void server_init(void)
     
     pipe_name[sizeof(pipe_name)-1]= 0;		/* Safety if too long string */
     strxnmov(pipe_name, sizeof(pipe_name)-1, "\\\\.\\pipe\\",
-	     mysql_unix_port, NullS);
+	     mysqld_unix_port, NullS);
     bzero((char*) &saPipeSecurity, sizeof(saPipeSecurity));
     bzero((char*) &sdPipeDescriptor, sizeof(sdPipeDescriptor));
     if (!InitializeSecurityDescriptor(&sdPipeDescriptor,