Exit cleanly for the SRPC "log" requests instead of generating crash reports.

src/trusted/service_runtime/nacl_error_log_hook.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <stdio.h>
 
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/shared/platform/nacl_exit.h"
@@ skipping 16 matching lines @@
     /*
      * Copy the last NACL_ERROR_GIO_MAX_BYTES of log output to the
      * calling thread's stack, so that breakpad will pick it up.
      */
     log_data_bytes = NaClErrorGioGetOutput(&g_NaCl_log_gio,
                                            log_data,
                                            NACL_ARRAY_SIZE(log_data));
     (*g_NaCl_log_abort_fn)(g_NaCl_log_abort_state,
                            log_data, log_data_bytes);
   }
-  NaClAbort();
 }
 
 void NaClErrorLogHookInit(void (*hook)(void *state,
                                        char *buf,
                                        size_t buf_bytes),
                           void *state) {
   NaClLog(2, "NaClErrorLogHookInit: entered\n");
   if (!NaClErrorGioCtor(&g_NaCl_log_gio, NaClLogGetGio())) {
     fprintf(stderr, "sel_main_chrome: log reporting setup failed\n");
     NaClAbort();
   }
 
   g_NaCl_log_abort_fn = hook;
   g_NaCl_log_abort_state = state;
 
   NaClLogSetGio((struct Gio *) &g_NaCl_log_gio);
 
   NaClLogSetAbortBehavior(NaClReportLogMessages);
 }