Win: fix typos

Author: davidpanderson

lib/filesys.cpp

@@ -347,11 +347,11 @@ int boinc_delete_file(const char* path) {
 //
 int file_size(const char* path, double& size) {
 #if defined(_WIN32) && !defined(__CYGWIN32__) && !defined(__MINGW32__)
-    HANDLE h = CreateFile(path, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
+    HANDLE h = CreateFileA(path, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
     if (h == INVALID_HANDLE_VALUE) return ERR_STAT;
-    LARGE_INTEGER size;
-    if (GetFileSizeEx(h, &size)) {
-        size = (double) size.QuadPart;
+    LARGE_INTEGER lisize;
+    if (GetFileSizeEx(h, &lisize)) {
+        size = (double) lisize.QuadPart;
         CloseHandle(h);
         return 0;
     }
@@ -546,7 +546,6 @@ int boinc_file_exists(const char* path) {
     return (dwAttrib != INVALID_FILE_ATTRIBUTES
         && !(dwAttrib & FILE_ATTRIBUTE_DIRECTORY)
     );
-}
 #else
     struct stat buf;
     if (stat(path, &buf)) {