Fix clang warning in sqlite shell_icu_linux.c.

third_party/sqlite/icu-shell.patch

 History uses fts3 with an icu-based segmenter.  These changes allow
 building a sqlite3 binary which can read those files.
 
 Index: src/shell.c
 ===================================================================
 --- src/shell.c 2009-09-04 13:37:43.000000000 -0700
 +++ src/shell.c 2009-09-15 11:32:08.000000000 -0700
 @@ -3007,6 +3007,14 @@
    int i;
    int rc = 0;
  
 +  /* Begin evanm patch. */
 +  extern int sqlite_shell_init_icu();
 +  if( !sqlite_shell_init_icu() ){
 +    fprintf(stderr, "%s: warning: couldn't find icudt38.dll; "
 +                    "queries against ICU FTS tables will fail.\n", argv[0]);
 +  }
 +  /* End evanm patch. */
 +
    Argv0 = argv[0];
    main_init(&data);
    stdin_is_interactive = isatty(0);
-Index: src/shell_icu_linux.c
-===================================================================
---- src/shell_icu_linux.c       1969-12-31 16:00:00.000000000 -0800
-+++ src/shell_icu_linux.c       2009-09-17 13:48:49.000000000 -0700
-@@ -0,0 +1,26 @@
+diff --git src/shell_icu_linux.c src/shell_icu_linux.c
+new file mode 100644
+index 0000000..4ad0e42
+--- /dev/null
++++ src/shell_icu_linux.c
+@@ -0,0 +1,27 @@
 +/* Copyright 2007 Google Inc. All Rights Reserved.
 +**/
 +
 +#include <limits.h>
 +#include <unistd.h>
++#include "unicode/putil.h"
 +#include "unicode/udata.h"
 +
 +/*
 +** This function attempts to load the ICU data tables from a data file.
 +** Returns 0 on failure, nonzero on success.
 +** This a hack job of icu_utils.cc:Initialize().  It's Chrome-specific code.
 +*/
 +int sqlite_shell_init_icu() {
 +  char bin_dir[PATH_MAX + 1];
 +  int bin_dir_size = readlink("/proc/self/exe", bin_dir, PATH_MAX);
@@ skipping 38 matching lines @@
 +
 +  addr = GetProcAddress(module, ICU_DATA_SYMBOL);
 +  if (!addr)
 +    return 0;
 +
 +  err = U_ZERO_ERROR;
 +  udata_setCommonData(addr, &err);
 +
 +  return 1;
 +}