CDROM,WIN: guard header files against C/C++ mixup

src/cdrom/cdrom.h

@@ -39,6 +39,9 @@
 #ifndef EMU_CDROM_H
 #define EMU_CDROM_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define CDROM_NUM		4
 
@@ -243,11 +246,6 @@ extern cdrom_ioctl_t	cdrom_ioctl[CDROM_NUM];
 #define cdrom_ascq cdrom[id].sense[13]
 #define cdrom_drive cdrom_drives[id].host_drive
 
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 extern int	(*ide_bus_master_read)(int channel, uint8_t *data, int transfer_length);
 extern int	(*ide_bus_master_write)(int channel, uint8_t *data, int transfer_length);
 extern void	(*ide_bus_master_set_irq)(int channel);

src/cdrom/cdrom_null.h

@@ -37,10 +37,16 @@
 #ifndef EMU_CDROM_NULL_H
 # define EMU_CDROM_NULL_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 extern int	cdrom_null_open(uint8_t id, char d);
 extern void	cdrom_null_reset(uint8_t id);
 extern void	null_close(uint8_t id);
 
+#ifdef __cplusplus
+}
+#endif
 
 #endif	/*EMU_CDROM_NULL_H*/

src/win/win.h

@@ -39,6 +39,10 @@
 #ifndef PLAT_WIN_H
 # define PLAT_WIN_H
 
+ #ifdef __cplusplus
+extern "C" {
+#endif
+
 # define UNICODE
 # define BITMAP WINDOWS_BITMAP
 # if 0
@@ -84,10 +88,6 @@ extern WCHAR		wopenfilestring[260];
 extern uint8_t		filterindex;
 
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #ifdef USE_CRASHDUMP
 extern void	InitCrashDump(void);
 #endif