As noted in the comment our struct statvfs doesn't have f_type so the checks
performed are meaningless on OpenBSD.  They're comparisons against hardcoded
magic values anyway.  While here, fix the | vs || mismatch.

Index: ntfsprogs/ntfsclone.c
--- ntfsprogs/ntfsclone.c.orig
+++ ntfsprogs/ntfsclone.c
@@ -105,7 +105,7 @@
 #undef HAVE_WINDOWS_H
 #endif
 
-#if defined(__sun) | defined(HAVE_WINDOWS_H)
+#if defined(__sun) || defined(HAVE_WINDOWS_H) || defined(__OpenBSD__)
 #define NO_STATFS 1	/* statfs(2) and f_type are not universal */
 #endif