Fix Windows build error.

Change-Id: Id1524280fc30209e9ee2e630ca165c65f8b3794c
diff --git a/src/profiling/symbolizer/filesystem_windows.cc b/src/profiling/symbolizer/filesystem_windows.cc
index 4c3e244..935703c 100644
--- a/src/profiling/symbolizer/filesystem_windows.cc
+++ b/src/profiling/symbolizer/filesystem_windows.cc
@@ -25,7 +25,7 @@
 bool WalkDirectories(std::vector<std::string> dirs, FileCallback fn) {
   std::vector<std::string> sub_dirs;
   for (const std::string& dir : dirs) {
-    WIN32_FIND_DATA file;
+    LPWIN32_FIND_DATAA file;
     HANDLE fh = FindFirstFileA((dir + "\\*").c_str(), &file);
     if (fh != INVALID_HANDLE_VALUE) {
       do {