gpt: Fixed boot loader build.

* Thanks, Alex!

src/add-ons/kernel/partitioning_systems/gpt/Header.cpp

@@ -250,6 +250,16 @@ Header::_Write(int fd, off_t offset, const void* data, size_t size) const
 }
 
 
+void
+Header::_UpdateCRC()
+{
+	fHeader.SetEntriesCRC(crc32(fEntries, _EntryArraySize()));
+	fHeader.SetHeaderCRC(0);
+	fHeader.SetHeaderCRC(crc32((uint8*)&fHeader, sizeof(efi_table_header)));
+}
+#endif // !_BOOT_MODE
+
+
 status_t
 Header::_Read(int fd, off_t offset, void* data, size_t size) const
 {
@@ -263,16 +273,6 @@ Header::_Read(int fd, off_t offset, void* data, size_t size) const
 }
 
 
-void
-Header::_UpdateCRC()
-{
-	fHeader.SetEntriesCRC(crc32(fEntries, _EntryArraySize()));
-	fHeader.SetHeaderCRC(0);
-	fHeader.SetHeaderCRC(crc32((uint8*)&fHeader, sizeof(efi_table_header)));
-}
-#endif // !_BOOT_MODE
-
-
 bool
 Header::_IsHeaderValid(const efi_table_header& header, uint64 block)
 {

src/add-ons/kernel/partitioning_systems/gpt/Header.h

@@ -47,11 +47,11 @@ private:
 			status_t			_WriteHeader(int fd);
 			status_t			_Write(int fd, off_t offset, const void* data,
 									size_t size) const;
-			status_t			_Read(int fd, off_t offset, void* data,
-									size_t size) const;
 			void				_UpdateCRC();
 #endif
 
+			status_t			_Read(int fd, off_t offset, void* data,
+									size_t size) const;
 			bool				_IsHeaderValid(const efi_table_header& header,
 									uint64 block);
 			bool				_ValidateHeaderCRC();