Fixes after review

Author: Artyom Ivanov

src/jrd/os/posix/unix.cpp

@@ -302,9 +302,7 @@ bool PIO_expand(const TEXT* file_name, USHORT file_length, TEXT* expanded_name,
 bool PIO_fast_extension_is_supported(const Jrd::jrd_file& file) noexcept
 {
 #if defined(HAVE_LINUX_FALLOC_H) && defined(HAVE_FALLOCATE)
-	return file.fil_flags & FIL_no_fast_extend
-		? false
-		: true;
+	return !(file.fil_flags & FIL_no_fast_extend);
 #else
 	return false;
 #endif

src/jrd/pag.cpp

@@ -275,9 +275,8 @@ namespace
 		const ULONG sequence = pageNum.getPageNum() / pageMgr.pagesPerPIP;
 		const ULONG relativeBit = pageNum.getPageNum() - sequence * pageMgr.pagesPerPIP;
 
-		if (relativeBit + 1 <= pipUsed)
+		if (relativeBit < pipUsed)
 			return pipUsed;
-		fb_assert(relativeBit >= pipUsed);
 
 		BackupManager::StateReadGuard stateGuard(tdbb);