Work around a crash in putil.c in ICU (searchForTZFile)....

third_party/icu/source/common/putil.c

 /*
 ******************************************************************************
 *
 *   Copyright (C) 1997-2009, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
 *
 *  FILE NAME : putil.c (previously putil.cpp and ptypes.cpp)
 *
@@ skipping 831 matching lines @@
 static char SEARCH_TZFILE_RESULT[MAX_PATH_SIZE] = "";
 static char* searchForTZFile(const char* path, DefaultTZInfo* tzInfo) {
     DIR* dirp = opendir(path);
     DIR* subDirp = NULL;
     struct dirent* dirEntry = NULL;
 
     char* result = NULL;
 
     /* Save the current path */
     char curpath[MAX_PATH_SIZE];
+
+    if (dirp == NULL)
+        return result;
+
     uprv_memset(curpath, 0, MAX_PATH_SIZE);
     uprv_strcpy(curpath, path);
 
     /* Check each entry in the directory. */
     while((dirEntry = readdir(dirp)) != NULL) {
         if (uprv_strcmp(dirEntry->d_name, SKIP1) != 0 && uprv_strcmp(dirEntry->d_name, SKIP2) != 0) {
             /* Create a newpath with the new entry to test each entry in the directory. */
             char newpath[MAX_PATH_SIZE];
             uprv_strcpy(newpath, curpath);
             uprv_strcat(newpath, dirEntry->d_name);
@@ skipping 1066 matching lines @@
 }
 
 /*
  * Hey, Emacs, please set the following:
  *
  * Local Variables:
  * indent-tabs-mode: nil
  * End:
  *
  */